1267542732 has 12 divisors (see below), whose sum is σ = 2957599736. Its totient is φ = 422514240.

The previous prime is 1267542667. The next prime is 1267542737. The reversal of 1267542732 is 2372457621.

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

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1267542737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52814269 + ... + 52814292.

Almost surely, 2^1267542732 is an apocalyptic number.

1267542732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1267542732 is an abundant number, since it is smaller than the sum of its proper divisors (1690057004).

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

1267542732 is a wasteful number, since it uses less digits than its factorization.

1267542732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105628568 (or 105628566 counting only the distinct ones).

The product of its digits is 141120, while the sum is 39.

The square root of 1267542732 is about 35602.5663681707. The cubic root of 1267542732 is about 1082.2332423920.

The spelling of 1267542732 in words is "one billion, two hundred sixty-seven million, five hundred forty-two thousand, seven hundred thirty-two".