1272159762 has 64 divisors (see below), whose sum is σ = 2769223680. Its totient is φ = 388390464.

The previous prime is 1272159761. The next prime is 1272159769. The reversal of 1272159762 is 2679512721.

1272159762 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1272159761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 507003 + ... + 509505.

It is an arithmetic number, because the mean of its divisors is an integer number (43269120).

Almost surely, 2^1272159762 is an apocalyptic number.

1272159762 is an abundant number, since it is smaller than the sum of its proper divisors (1497063918).

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

1272159762 is a wasteful number, since it uses less digits than its factorization.

1272159762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2687.

The product of its digits is 105840, while the sum is 42.

The square root of 1272159762 is about 35667.3486819528. The cubic root of 1272159762 is about 1083.5456633017.

The spelling of 1272159762 in words is "one billion, two hundred seventy-two million, one hundred fifty-nine thousand, seven hundred sixty-two".