156121530 has 32 divisors (see below), whose sum is σ = 375404544. Its totient is φ = 41553216.

The previous prime is 156121513. The next prime is 156121541. The reversal of 156121530 is 35121651.

It is a self number, because there is not a number n which added to its sum of digits gives 156121530.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12039 + ... + 21381.

It is an arithmetic number, because the mean of its divisors is an integer number (11731392).

Almost surely, 2^156121530 is an apocalyptic number.

156121530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

156121530 is an abundant number, since it is smaller than the sum of its proper divisors (219283014).

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

156121530 is a wasteful number, since it uses less digits than its factorization.

156121530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9910.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 156121530 is about 12494.8601432749. The cubic root of 156121530 is about 538.4610159126.

It can be divided in two parts, 156121 and 530, that added together give a palindrome (156651).

The spelling of 156121530 in words is "one hundred fifty-six million, one hundred twenty-one thousand, five hundred thirty".