1272740116 has 6 divisors (see below), whose sum is σ = 2227295210. Its totient is φ = 636370056.

The previous prime is 1272740113. The next prime is 1272740129. The reversal of 1272740116 is 6110472721.

It can be written as a sum of positive squares in only one way, i.e., 1105296516 + 167443600 = 33246^2 + 12940^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272740113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159092511 + ... + 159092518.

Almost surely, 2^1272740116 is an apocalyptic number.

It is an amenable number.

1272740116 is a deficient number, since it is larger than the sum of its proper divisors (954555094).

1272740116 is a wasteful number, since it uses less digits than its factorization.

1272740116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318185033 (or 318185031 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 1272740116 is about 35675.4834024712. The cubic root of 1272740116 is about 1083.7104079295.

The spelling of 1272740116 in words is "one billion, two hundred seventy-two million, seven hundred forty thousand, one hundred sixteen".