156434120 has 32 divisors (see below), whose sum is σ = 364116600. Its totient is φ = 60415488.

The previous prime is 156434071. The next prime is 156434123. The reversal of 156434120 is 21434651.

It can be written as a sum of positive squares in 4 ways, for example, as 89226916 + 67207204 = 9446^2 + 8198^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 156434120.

It is not an unprimeable number, because it can be changed into a prime (156434123) 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, 66269 + ... + 68588.

Almost surely, 2^156434120 is an apocalyptic number.

156434120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156434120 is an abundant number, since it is smaller than the sum of its proper divisors (207682480).

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

156434120 is a wasteful number, since it uses less digits than its factorization.

156434120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134897 (or 134893 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 156434120 is about 12507.3626316662. The cubic root of 156434120 is about 538.8201492053.

Adding to 156434120 its reverse (21434651), we get a palindrome (177868771).

The spelling of 156434120 in words is "one hundred fifty-six million, four hundred thirty-four thousand, one hundred twenty".