1125971272 has 64 divisors (see below), whose sum is σ = 2223054720. Its totient is φ = 534117888.

The previous prime is 1125971269. The next prime is 1125971299. The reversal of 1125971272 is 2721795211.

It is a happy number.

It is a super-2 number, since 2×1125971272² = 2535622610738595968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

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, 2311813 + ... + 2312299.

It is an arithmetic number, because the mean of its divisors is an integer number (34735230).

Almost surely, 2^1125971272 is an apocalyptic number.

It is an amenable number.

1125971272 is a deficient number, since it is larger than the sum of its proper divisors (1097083448).

1125971272 is a wasteful number, since it uses less digits than its factorization.

1125971272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710 (or 706 counting only the distinct ones).

The product of its digits is 17640, while the sum is 37.

The square root of 1125971272 is about 33555.4954068629. The cubic root of 1125971272 is about 1040.3411331608.

The spelling of 1125971272 in words is "one billion, one hundred twenty-five million, nine hundred seventy-one thousand, two hundred seventy-two".