400021035134 has 16 divisors (see below), whose sum is σ = 685814495328. Its totient is φ = 171421549152.

The previous prime is 400021035131. The next prime is 400021035157. The reversal of 400021035134 is 431530120004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400021035131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1180817 + ... + 1481340.

It is an arithmetic number, because the mean of its divisors is an integer number (42863405958).

Almost surely, 2^400021035134 is an apocalyptic number.

400021035134 is a deficient number, since it is larger than the sum of its proper divisors (285793460194).

400021035134 is a wasteful number, since it uses less digits than its factorization.

400021035134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2672899.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 400021035134 its reverse (431530120004), we get a palindrome (831551155138).

The spelling of 400021035134 in words is "four hundred billion, twenty-one million, thirty-five thousand, one hundred thirty-four".