400132402 has 8 divisors (see below), whose sum is σ = 601742700. Its totient is φ = 199551504.

The previous prime is 400132391. The next prime is 400132427. The reversal of 400132402 is 204231004.

It can be written as a sum of positive squares in 2 ways, for example, as 386948241 + 13184161 = 19671^2 + 3631^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256377 + ... + 257932.

Almost surely, 2^400132402 is an apocalyptic number.

400132402 is a deficient number, since it is larger than the sum of its proper divisors (201610298).

400132402 is a wasteful number, since it uses less digits than its factorization.

400132402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514700.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 400132402 is about 20003.3097761345. The cubic root of 400132402 is about 736.8875862831.

Adding to 400132402 its reverse (204231004), we get a palindrome (604363406).

The spelling of 400132402 in words is "four hundred million, one hundred thirty-two thousand, four hundred two".