400043134 has 4 divisors (see below), whose sum is σ = 600064704. Its totient is φ = 200021566.

The previous prime is 400043113. The next prime is 400043143. The reversal of 400043134 is 431340004.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100010782 + ... + 100010785.

It is an arithmetic number, because the mean of its divisors is an integer number (150016176).

Almost surely, 2^400043134 is an apocalyptic number.

400043134 is a deficient number, since it is larger than the sum of its proper divisors (200021570).

400043134 is a wasteful number, since it uses less digits than its factorization.

400043134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200021569.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 400043134 is about 20001.0783209306. The cubic root of 400043134 is about 736.8327832786.

Adding to 400043134 its reverse (431340004), we get a palindrome (831383138).

The spelling of 400043134 in words is "four hundred million, forty-three thousand, one hundred thirty-four".