126401402515 has 16 divisors (see below), whose sum is σ = 152046266976. Its totient is φ = 100878220800.

The previous prime is 126401402503. The next prime is 126401402563. The reversal of 126401402515 is 515204104621.

It is a happy number.

It is not a de Polignac number, because 126401402515 - 2⁵ = 126401402483 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8125645 + ... + 8141185.

It is an arithmetic number, because the mean of its divisors is an integer number (9502891686).

Almost surely, 2^126401402515 is an apocalyptic number.

126401402515 is a deficient number, since it is larger than the sum of its proper divisors (25644864461).

126401402515 is a wasteful number, since it uses less digits than its factorization.

126401402515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19350.

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 126401402515 in words is "one hundred twenty-six billion, four hundred one million, four hundred two thousand, five hundred fifteen".