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7490142 = 23211219181
BaseRepresentation
bin11100100100101001011110
3112002112112200
4130210221132
53404141032
6424312330
7120444102
oct34445136
915075480
107490142
114256500
1226126a6
13172334a
14dcd902
159ce47c
hex724a5e

7490142 has 72 divisors (see below), whose sum is σ = 18880680. Its totient is φ = 2138400.

The previous prime is 7490141. The next prime is 7490143. The reversal of 7490142 is 2410947.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7490141) and next prime (7490143).

It is a super-2 number, since 2×74901422 = 112204454360328, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7490141) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 41292 + ... + 41472.

Almost surely, 27490142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7490142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9440340).

7490142 is an abundant number, since it is smaller than the sum of its proper divisors (11390538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7490142 is a wasteful number, since it uses less digits than its factorization.

7490142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 7490142 is about 2736.8123793932. The cubic root of 7490142 is about 195.6575827555.

The spelling of 7490142 in words is "seven million, four hundred ninety thousand, one hundred forty-two".

Divisors: 1 2 3 6 9 11 18 19 22 33 38 57 66 99 114 121 171 181 198 209 242 342 362 363 418 543 627 726 1086 1089 1254 1629 1881 1991 2178 2299 3258 3439 3762 3982 4598 5973 6878 6897 10317 11946 13794 17919 20634 20691 21901 30951 35838 37829 41382 43802 61902 65703 75658 113487 131406 197109 226974 340461 394218 416119 680922 832238 1248357 2496714 3745071 7490142