126956865 has 16 divisors (see below), whose sum is σ = 232149888. Its totient is φ = 58037376.

The previous prime is 126956861. The next prime is 126956887. The reversal of 126956865 is 568659621.

It is not a de Polignac number, because 126956865 - 2² = 126956861 is a prime.

It is a super-2 number, since 2×126956865² = 32236091141256450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126956861) 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, 604452 + ... + 604661.

It is an arithmetic number, because the mean of its divisors is an integer number (14509368).

Almost surely, 2^126956865 is an apocalyptic number.

126956865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126956865 is a deficient number, since it is larger than the sum of its proper divisors (105193023).

126956865 is a wasteful number, since it uses less digits than its factorization.

126956865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209128.

The product of its digits is 777600, while the sum is 48.

The square root of 126956865 is about 11267.5137009014. The cubic root of 126956865 is about 502.5956551645.

The spelling of 126956865 in words is "one hundred twenty-six million, nine hundred fifty-six thousand, eight hundred sixty-five".