402242320324 has 24 divisors (see below), whose sum is σ = 759730911128. Its totient is φ = 185244053760.

The previous prime is 402242320313. The next prime is 402242320343. The reversal of 402242320324 is 423023242204.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 79027329924 + 323214990400 = 281118^2 + 568520^2 .

It is a junction number, because it is equal to n+sod(n) for n = 402242320292 and 402242320301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8439507 + ... + 8487034.

Almost surely, 2^402242320324 is an apocalyptic number.

It is an amenable number.

402242320324 is a deficient number, since it is larger than the sum of its proper divisors (357488590804).

402242320324 is a wasteful number, since it uses less digits than its factorization.

402242320324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16927015 (or 16927013 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 402242320324 its reverse (423023242204), we get a palindrome (825265562528).

The spelling of 402242320324 in words is "four hundred two billion, two hundred forty-two million, three hundred twenty thousand, three hundred twenty-four".