402430120424 has 8 divisors (see below), whose sum is σ = 754556475810. Its totient is φ = 201215060208.

The previous prime is 402430120381. The next prime is 402430120427. The reversal of 402430120424 is 424021034204.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 313620160324 + 88809960100 = 560018^2 + 298010^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 402430120393 and 402430120402.

It is not an unprimeable number, because it can be changed into a prime (402430120427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25151882519 + ... + 25151882534.

Almost surely, 2^402430120424 is an apocalyptic number.

It is an amenable number.

402430120424 is a deficient number, since it is larger than the sum of its proper divisors (352126355386).

402430120424 is a wasteful number, since it uses less digits than its factorization.

402430120424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50303765059 (or 50303765055 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 402430120424 its reverse (424021034204), we get a palindrome (826451154628).

The spelling of 402430120424 in words is "four hundred two billion, four hundred thirty million, one hundred twenty thousand, four hundred twenty-four".