400424132 has 12 divisors (see below), whose sum is σ = 700882476. Its totient is φ = 200172000.

The previous prime is 400424099. The next prime is 400424147. The reversal of 400424132 is 231424004.

It can be written as a sum of positive squares in 2 ways, for example, as 91508356 + 308915776 = 9566^2 + 17576^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32882 + ... + 43382.

It is an arithmetic number, because the mean of its divisors is an integer number (58406873).

Almost surely, 2^400424132 is an apocalyptic number.

It is an amenable number.

400424132 is a deficient number, since it is larger than the sum of its proper divisors (300458344).

400424132 is a wasteful number, since it uses less digits than its factorization.

400424132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20038 (or 20036 counting only the distinct ones).

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

The square root of 400424132 is about 20010.6004907399. The cubic root of 400424132 is about 737.0666270134.

Adding to 400424132 its reverse (231424004), we get a palindrome (631848136).

The spelling of 400424132 in words is "four hundred million, four hundred twenty-four thousand, one hundred thirty-two".