126440921795 has 16 divisors (see below), whose sum is σ = 153228391680. Its totient is φ = 100153550304.

The previous prime is 126440921791. The next prime is 126440921819. The reversal of 126440921795 is 597129044621.

It is a cyclic number.

It is not a de Polignac number, because 126440921795 - 2² = 126440921791 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126440921791) 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, 3601436 + ... + 3636374.

It is an arithmetic number, because the mean of its divisors is an integer number (9576774480).

Almost surely, 2^126440921795 is an apocalyptic number.

126440921795 is a deficient number, since it is larger than the sum of its proper divisors (26787469885).

126440921795 is a wasteful number, since it uses less digits than its factorization.

126440921795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42074.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 126440921795 in words is "one hundred twenty-six billion, four hundred forty million, nine hundred twenty-one thousand, seven hundred ninety-five".