1272711542 has 32 divisors (see below), whose sum is σ = 2052328320. Its totient is φ = 590163840.

The previous prime is 1272711529. The next prime is 1272711547. The reversal of 1272711542 is 2451172721.

It is a junction number, because it is equal to n+sod(n) for n = 1272711499 and 1272711508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272711547) 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, 354617 + ... + 358187.

It is an arithmetic number, because the mean of its divisors is an integer number (64135260).

Almost surely, 2^1272711542 is an apocalyptic number.

1272711542 is a deficient number, since it is larger than the sum of its proper divisors (779616778).

1272711542 is a wasteful number, since it uses less digits than its factorization.

1272711542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3788.

The product of its digits is 7840, while the sum is 32.

The square root of 1272711542 is about 35675.0829291258. The cubic root of 1272711542 is about 1083.7022978232.

The spelling of 1272711542 in words is "one billion, two hundred seventy-two million, seven hundred eleven thousand, five hundred forty-two".