402144004 has 6 divisors (see below), whose sum is σ = 703752014. Its totient is φ = 201072000.

The previous prime is 402143999. The next prime is 402144011. The reversal of 402144004 is 400441204.

It can be written as a sum of positive squares in only one way, i.e., 272184004 + 129960000 = 16498^2 + 11400^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50267997 + ... + 50268004.

Almost surely, 2^402144004 is an apocalyptic number.

It is an amenable number.

402144004 is a deficient number, since it is larger than the sum of its proper divisors (301608010).

402144004 is a wasteful number, since it uses less digits than its factorization.

402144004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100536005 (or 100536003 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 402144004 is about 20053.5284675790. The cubic root of 402144004 is about 738.1203843930.

Adding to 402144004 its reverse (400441204), we get a palindrome (802585208).

The spelling of 402144004 in words is "four hundred two million, one hundred forty-four thousand, four".