126254929857 has 16 divisors (see below), whose sum is σ = 193186764672. Its totient is φ = 71846311680.

The previous prime is 126254929831. The next prime is 126254929861. The reversal of 126254929857 is 758929452621.

It is not a de Polignac number, because 126254929857 - 2⁸ = 126254929601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126254929857.

It is not an unprimeable number, because it can be changed into a prime (126254929807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12468258 + ... + 12478379.

It is an arithmetic number, because the mean of its divisors is an integer number (12074172792).

Almost surely, 2^126254929857 is an apocalyptic number.

It is an amenable number.

126254929857 is a deficient number, since it is larger than the sum of its proper divisors (66931834815).

126254929857 is a wasteful number, since it uses less digits than its factorization.

126254929857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24946888.

The product of its digits is 21772800, while the sum is 60.

The spelling of 126254929857 in words is "one hundred twenty-six billion, two hundred fifty-four million, nine hundred twenty-nine thousand, eight hundred fifty-seven".