126717965 has 32 divisors (see below), whose sum is σ = 174960000. Its totient is φ = 87243520.

The previous prime is 126717961. The next prime is 126717967. The reversal of 126717965 is 569717621.

It is not a de Polignac number, because 126717965 - 2² = 126717961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126717961) 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, 83786 + ... + 85284.

It is an arithmetic number, because the mean of its divisors is an integer number (5467500).

Almost surely, 2^126717965 is an apocalyptic number.

It is an amenable number.

126717965 is a deficient number, since it is larger than the sum of its proper divisors (48242035).

126717965 is a wasteful number, since it uses less digits than its factorization.

126717965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597.

The product of its digits is 158760, while the sum is 44.

The square root of 126717965 is about 11256.9074349930. The cubic root of 126717965 is about 502.2802055182.

The spelling of 126717965 in words is "one hundred twenty-six million, seven hundred seventeen thousand, nine hundred sixty-five".