1272118294 has 16 divisors (see below), whose sum is σ = 1996721280. Its totient is φ = 607106880.

The previous prime is 1272118291. The next prime is 1272118301. The reversal of 1272118294 is 4928112721.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136009 + ... + 145060.

It is an arithmetic number, because the mean of its divisors is an integer number (124795080).

Almost surely, 2^1272118294 is an apocalyptic number.

1272118294 is a deficient number, since it is larger than the sum of its proper divisors (724602986).

1272118294 is a wasteful number, since it uses less digits than its factorization.

1272118294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281175.

The product of its digits is 16128, while the sum is 37.

The square root of 1272118294 is about 35666.7673612286. The cubic root of 1272118294 is about 1083.5338898958.

The spelling of 1272118294 in words is "one billion, two hundred seventy-two million, one hundred eighteen thousand, two hundred ninety-four".