126396865 has 16 divisors (see below), whose sum is σ = 177034752. Its totient is φ = 84826944.

The previous prime is 126396863. The next prime is 126396901. The reversal of 126396865 is 568693621.

It is a cyclic number.

It is not a de Polignac number, because 126396865 - 2¹ = 126396863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126396863) 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, 36774 + ... + 40063.

It is an arithmetic number, because the mean of its divisors is an integer number (11064672).

Almost surely, 2^126396865 is an apocalyptic number.

It is an amenable number.

126396865 is a deficient number, since it is larger than the sum of its proper divisors (50637887).

126396865 is an equidigital number, since it uses as much as digits as its factorization.

126396865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76896.

The product of its digits is 466560, while the sum is 46.

The square root of 126396865 is about 11242.6360343115. The cubic root of 126396865 is about 501.8555917066.

The spelling of 126396865 in words is "one hundred twenty-six million, three hundred ninety-six thousand, eight hundred sixty-five".