156121134 has 16 divisors (see below), whose sum is σ = 336261072. Its totient is φ = 48037248.

The previous prime is 156121127. The next prime is 156121201. The reversal of 156121134 is 431121651.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000699 + ... + 1000854.

It is an arithmetic number, because the mean of its divisors is an integer number (21016317).

Almost surely, 2^156121134 is an apocalyptic number.

156121134 is an abundant number, since it is smaller than the sum of its proper divisors (180139938).

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

156121134 is a wasteful number, since it uses less digits than its factorization.

156121134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001571.

The product of its digits is 720, while the sum is 24.

The square root of 156121134 is about 12494.8442967490. The cubic root of 156121134 is about 538.4605606461.

Adding to 156121134 its reverse (431121651), we get a palindrome (587242785).

The spelling of 156121134 in words is "one hundred fifty-six million, one hundred twenty-one thousand, one hundred thirty-four".