402113244424 has 8 divisors (see below), whose sum is σ = 753962333310. Its totient is φ = 201056622208.

The previous prime is 402113244361. The next prime is 402113244439. The reversal of 402113244424 is 424442311204.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 225133168324 + 176980076100 = 474482^2 + 420690^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×402113244424² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25132077769 + ... + 25132077784.

Almost surely, 2^402113244424 is an apocalyptic number.

It is an amenable number.

402113244424 is a deficient number, since it is larger than the sum of its proper divisors (351849088886).

402113244424 is a wasteful number, since it uses less digits than its factorization.

402113244424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50264155559 (or 50264155555 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 402113244424 its reverse (424442311204), we get a palindrome (826555555628).

The spelling of 402113244424 in words is "four hundred two billion, one hundred thirteen million, two hundred forty-four thousand, four hundred twenty-four".