126005623401 has 32 divisors (see below), whose sum is σ = 195399712768. Its totient is φ = 70742548800.

The previous prime is 126005623357. The next prime is 126005623421. The reversal of 126005623401 is 104326500621.

It is not a de Polignac number, because 126005623401 - 2⁷ = 126005623273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126005623421) 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 31 ways as a sum of consecutive naturals, for example, 45351 + ... + 504051.

It is an arithmetic number, because the mean of its divisors is an integer number (6106241024).

Almost surely, 2^126005623401 is an apocalyptic number.

It is an amenable number.

126005623401 is a deficient number, since it is larger than the sum of its proper divisors (69394089367).

126005623401 is a wasteful number, since it uses less digits than its factorization.

126005623401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458941.

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 126005623401 in words is "one hundred twenty-six billion, five million, six hundred twenty-three thousand, four hundred one".