400013134 has 4 divisors (see below), whose sum is σ = 600019704. Its totient is φ = 200006566.

The previous prime is 400013123. The next prime is 400013143. The reversal of 400013134 is 431310004.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100003282 + ... + 100003285.

It is an arithmetic number, because the mean of its divisors is an integer number (150004926).

Almost surely, 2^400013134 is an apocalyptic number.

400013134 is a deficient number, since it is larger than the sum of its proper divisors (200006570).

400013134 is a wasteful number, since it uses less digits than its factorization.

400013134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200006569.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 400013134 is about 20000.3283473047. The cubic root of 400013134 is about 736.8143639848.

Adding to 400013134 its reverse (431310004), we get a palindrome (831323138).

The spelling of 400013134 in words is "four hundred million, thirteen thousand, one hundred thirty-four".