1156129972 has 24 divisors (see below), whose sum is σ = 2128601160. Its totient is φ = 548720640.

The previous prime is 1156129967. The next prime is 1156130021. The reversal of 1156129972 is 2799216511.

It can be written as a sum of positive squares in 4 ways, for example, as 46840336 + 1109289636 = 6844^2 + 33306^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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, 89197 + ... + 101332.

It is an arithmetic number, because the mean of its divisors is an integer number (88691715).

Almost surely, 2^1156129972 is an apocalyptic number.

It is an amenable number.

1156129972 is a deficient number, since it is larger than the sum of its proper divisors (972471188).

1156129972 is a wasteful number, since it uses less digits than its factorization.

1156129972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190611 (or 190609 counting only the distinct ones).

The product of its digits is 68040, while the sum is 43.

The square root of 1156129972 is about 34001.9112992196. The cubic root of 1156129972 is about 1049.5477937861.

The spelling of 1156129972 in words is "one billion, one hundred fifty-six million, one hundred twenty-nine thousand, nine hundred seventy-two".