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142153361 = 725949171
BaseRepresentation
bin10000111100100…
…01011010010001
3100220111010202022
420132101122101
5242342401421
622034501225
73344166200
oct1036213221
9326433668
10142153361
1173272a19
123b734815
13235b251c
1414c45237
15c72e7ab
hex8791691

142153361 has 12 divisors (see below), whose sum is σ = 168168240. Its totient is φ = 119778120.

The previous prime is 142153343. The next prime is 142153373. The reversal of 142153361 is 163351241.

It is a de Polignac number, because none of the positive numbers 2k-142153361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142153361.

It is not an unprimeable number, because it can be changed into a prime (142153861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21695 + ... + 27476.

It is an arithmetic number, because the mean of its divisors is an integer number (14014020).

Almost surely, 2142153361 is an apocalyptic number.

It is an amenable number.

142153361 is a deficient number, since it is larger than the sum of its proper divisors (26014879).

142153361 is an equidigital number, since it uses as much as digits as its factorization.

142153361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49244 (or 49237 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 142153361 is about 11922.8084359349. The cubic root of 142153361 is about 521.8980940024.

It can be divided in two parts, 14215 and 3361, that added together give a cube (17576 = 263).

The spelling of 142153361 in words is "one hundred forty-two million, one hundred fifty-three thousand, three hundred sixty-one".

Divisors: 1 7 49 59 413 2891 49171 344197 2409379 2901089 20307623 142153361