400422134 has 16 divisors (see below), whose sum is σ = 716283648. Its totient is φ = 164148072.

The previous prime is 400422091. The next prime is 400422151. The reversal of 400422134 is 431224004.

It is a super-2 number, since 2×400422134² = 320675770794227912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 621452 + ... + 622095.

It is an arithmetic number, because the mean of its divisors is an integer number (44767728).

Almost surely, 2^400422134 is an apocalyptic number.

400422134 is a deficient number, since it is larger than the sum of its proper divisors (315861514).

400422134 is a wasteful number, since it uses less digits than its factorization.

400422134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243579.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 400422134 is about 20010.5505671383. The cubic root of 400422134 is about 737.0654010953.

Adding to 400422134 its reverse (431224004), we get a palindrome (831646138).

The spelling of 400422134 in words is "four hundred million, four hundred twenty-two thousand, one hundred thirty-four".