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142474040 = 2356158391
BaseRepresentation
bin10000111110111…
…11101100111000
3100221002102122022
420133133230320
5242433132130
622045414012
73350003132
oct1037375470
9327072568
10142474040
1173471945
123b86a308
1323695487
1414cca052
15c7947e5
hex87dfb38

142474040 has 32 divisors (see below), whose sum is σ = 325827360. Its totient is φ = 56054400.

The previous prime is 142474037. The next prime is 142474043. The reversal of 142474040 is 40474241.

It is an interprime number because it is at equal distance from previous prime (142474037) and next prime (142474043).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142474043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26756 + ... + 31635.

It is an arithmetic number, because the mean of its divisors is an integer number (10182105).

Almost surely, 2142474040 is an apocalyptic number.

142474040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142474040 is an abundant number, since it is smaller than the sum of its proper divisors (183353320).

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

142474040 is a wasteful number, since it uses less digits than its factorization.

142474040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58463 (or 58459 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 142474040 is about 11936.2489920410. The cubic root of 142474040 is about 522.2902434073.

The spelling of 142474040 in words is "one hundred forty-two million, four hundred seventy-four thousand, forty".

Divisors: 1 2 4 5 8 10 20 40 61 122 244 305 488 610 1220 2440 58391 116782 233564 291955 467128 583910 1167820 2335640 3561851 7123702 14247404 17809255 28494808 35618510 71237020 142474040