1272699132 has 12 divisors (see below), whose sum is σ = 2969631336. Its totient is φ = 424233040.

The previous prime is 1272699107. The next prime is 1272699161. The reversal of 1272699132 is 2319962721.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53029119 + ... + 53029142.

It is an arithmetic number, because the mean of its divisors is an integer number (247469278).

Almost surely, 2^1272699132 is an apocalyptic number.

1272699132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1272699132 is an abundant number, since it is smaller than the sum of its proper divisors (1696932204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1272699132 is a wasteful number, since it uses less digits than its factorization.

1272699132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106058268 (or 106058266 counting only the distinct ones).

The product of its digits is 81648, while the sum is 42.

The square root of 1272699132 is about 35674.9089977816. The cubic root of 1272699132 is about 1083.6987754777.

The spelling of 1272699132 in words is "one billion, two hundred seventy-two million, six hundred ninety-nine thousand, one hundred thirty-two".