126388401 has 16 divisors (see below), whose sum is σ = 171715200. Its totient is φ = 82667520.

The previous prime is 126388397. The next prime is 126388429. The reversal of 126388401 is 104883621.

It is not a de Polignac number, because 126388401 - 2² = 126388397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126388441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109041 + ... + 110193.

It is an arithmetic number, because the mean of its divisors is an integer number (10732200).

Almost surely, 2^126388401 is an apocalyptic number.

It is an amenable number.

126388401 is a deficient number, since it is larger than the sum of its proper divisors (45326799).

126388401 is a wasteful number, since it uses less digits than its factorization.

126388401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1816.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 126388401 is about 11242.2596038341. The cubic root of 126388401 is about 501.8443894231.

The spelling of 126388401 in words is "one hundred twenty-six million, three hundred eighty-eight thousand, four hundred one".