402143604 has 12 divisors (see below), whose sum is σ = 938335104. Its totient is φ = 134047864.

The previous prime is 402143597. The next prime is 402143629. The reversal of 402143604 is 406341204.

It is a tau number, because it is divible by the number of its divisors (12).

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 in 3 ways as a sum of consecutive naturals, for example, 16755972 + ... + 16755995.

It is an arithmetic number, because the mean of its divisors is an integer number (78194592).

Almost surely, 2^402143604 is an apocalyptic number.

It is an amenable number.

402143604 is an abundant number, since it is smaller than the sum of its proper divisors (536191500).

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

402143604 is a wasteful number, since it uses less digits than its factorization.

402143604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33511974 (or 33511972 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 402143604 is about 20053.5184942693. The cubic root of 402143604 is about 738.1201396646.

Adding to 402143604 its reverse (406341204), we get a palindrome (808484808).

The spelling of 402143604 in words is "four hundred two million, one hundred forty-three thousand, six hundred four".