400424502 has 16 divisors (see below), whose sum is σ = 801910512. Its totient is φ = 133297920.

The previous prime is 400424501. The next prime is 400424543. The reversal of 400424502 is 205424004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400424501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39283 + ... + 48414.

It is an arithmetic number, because the mean of its divisors is an integer number (50119407).

Almost surely, 2^400424502 is an apocalyptic number.

400424502 is an abundant number, since it is smaller than the sum of its proper divisors (401486010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400424502 is a wasteful number, since it uses less digits than its factorization.

400424502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88463.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 400424502 is about 20010.6097358376. The cubic root of 400424502 is about 737.0668540348.

Adding to 400424502 its reverse (205424004), we get a palindrome (605848506).

It can be divided in two parts, 40042 and 4502, that added together give a palindrome (44544).

The spelling of 400424502 in words is "four hundred million, four hundred twenty-four thousand, five hundred two".