1272118292 has 48 divisors (see below), whose sum is σ = 2347652160. Its totient is φ = 602337792.

The previous prime is 1272118291. The next prime is 1272118301. The reversal of 1272118292 is 2928112721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272118291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1402103 + ... + 1403009.

It is an arithmetic number, because the mean of its divisors is an integer number (48909420).

Almost surely, 2^1272118292 is an apocalyptic number.

It is an amenable number.

1272118292 is a deficient number, since it is larger than the sum of its proper divisors (1075533868).

1272118292 is a wasteful number, since it uses less digits than its factorization.

1272118292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160 (or 1158 counting only the distinct ones).

The product of its digits is 8064, while the sum is 35.

The square root of 1272118292 is about 35666.7673331913. The cubic root of 1272118292 is about 1083.5338893280.

It can be divided in two parts, 12721 and 18292, that added together give a palindrome (31013).

The spelling of 1272118292 in words is "one billion, two hundred seventy-two million, one hundred eighteen thousand, two hundred ninety-two".