1272738875 has 16 divisors (see below), whose sum is σ = 1604120544. Its totient is φ = 1008100000.

The previous prime is 1272738773. The next prime is 1272738889. The reversal of 1272738875 is 5788372721.

It is not a de Polignac number, because 1272738875 - 2²⁶ = 1205630011 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37781 + ... + 63030.

It is an arithmetic number, because the mean of its divisors is an integer number (100257534).

Almost surely, 2^1272738875 is an apocalyptic number.

1272738875 is a deficient number, since it is larger than the sum of its proper divisors (331381669).

1272738875 is a wasteful number, since it uses less digits than its factorization.

1272738875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100927 (or 100917 counting only the distinct ones).

The product of its digits is 1317120, while the sum is 50.

The square root of 1272738875 is about 35675.4660095702. The cubic root of 1272738875 is about 1083.7100557012.

The spelling of 1272738875 in words is "one billion, two hundred seventy-two million, seven hundred thirty-eight thousand, eight hundred seventy-five".