1272117982 has 16 divisors (see below), whose sum is σ = 2009629440. Its totient is φ = 602275608.

The previous prime is 1272117941. The next prime is 1272117997. The reversal of 1272117982 is 2897112721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78763 + ... + 93529.

It is an arithmetic number, because the mean of its divisors is an integer number (125601840).

Almost surely, 2^1272117982 is an apocalyptic number.

1272117982 is a deficient number, since it is larger than the sum of its proper divisors (737511458).

1272117982 is a wasteful number, since it uses less digits than its factorization.

1272117982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17055.

The product of its digits is 28224, while the sum is 40.

The square root of 1272117982 is about 35666.7629874089. The cubic root of 1272117982 is about 1083.5338013132.

It can be divided in two parts, 12721 and 17982, that added together give a palindrome (30703).

The spelling of 1272117982 in words is "one billion, two hundred seventy-two million, one hundred seventeen thousand, nine hundred eighty-two".