Search a number
-
+
121588140 = 22352026469
BaseRepresentation
bin1110011111101…
…00100110101100
322110210022120110
413033310212230
5222111310030
620022020020
73004324242
oct717644654
9273708513
10121588140
11626a6a73
1234877610
131c261a5b
1412210792
15aa1b1b0
hex73f49ac

121588140 has 24 divisors (see below), whose sum is σ = 340446960. Its totient is φ = 32423488.

The previous prime is 121588123. The next prime is 121588141. The reversal of 121588140 is 41885121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 121588098 and 121588107.

It is not an unprimeable number, because it can be changed into a prime (121588141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1013175 + ... + 1013294.

It is an arithmetic number, because the mean of its divisors is an integer number (14185290).

Almost surely, 2121588140 is an apocalyptic number.

121588140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121588140 is an abundant number, since it is smaller than the sum of its proper divisors (218858820).

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

121588140 is a wasteful number, since it uses less digits than its factorization.

121588140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2026481 (or 2026479 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 30.

The square root of 121588140 is about 11026.7012292888. The cubic root of 121588140 is about 495.4088245858.

The spelling of 121588140 in words is "one hundred twenty-one million, five hundred eighty-eight thousand, one hundred forty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 2026469 4052938 6079407 8105876 10132345 12158814 20264690 24317628 30397035 40529380 60794070 121588140