126615995 has 16 divisors (see below), whose sum is σ = 169797600. Its totient is φ = 89836800.

The previous prime is 126615991. The next prime is 126616003. The reversal of 126615995 is 599516621.

It is not a de Polignac number, because 126615995 - 2² = 126615991 is a prime.

It is a super-2 number, since 2×126615995² = 32063220379680050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126615991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25820 + ... + 30329.

It is an arithmetic number, because the mean of its divisors is an integer number (10612350).

Almost surely, 2^126615995 is an apocalyptic number.

126615995 is a deficient number, since it is larger than the sum of its proper divisors (43181605).

126615995 is a wasteful number, since it uses less digits than its factorization.

126615995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56206.

The product of its digits is 145800, while the sum is 44.

The square root of 126615995 is about 11252.3773043744. The cubic root of 126615995 is about 502.1454409988.

The spelling of 126615995 in words is "one hundred twenty-six million, six hundred fifteen thousand, nine hundred ninety-five".