402430232421 has 64 divisors (see below), whose sum is σ = 752810803200. Its totient is φ = 207022894848.

The previous prime is 402430232419. The next prime is 402430232459. The reversal of 402430232421 is 124232034204.

402430232421 is a `hidden beast` number, since 4 + 0 + 2 + 4 + 3 + 0 + 232 + 421 = 666.

It is not a de Polignac number, because 402430232421 - 2¹ = 402430232419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402430232471) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2648941 + ... + 2796738.

It is an arithmetic number, because the mean of its divisors is an integer number (11762668800).

Almost surely, 2^402430232421 is an apocalyptic number.

It is an amenable number.

402430232421 is a deficient number, since it is larger than the sum of its proper divisors (350380570779).

402430232421 is a wasteful number, since it uses less digits than its factorization.

402430232421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5445735 (or 5445729 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 402430232421 its reverse (124232034204), we get a palindrome (526662266625).

The spelling of 402430232421 in words is "four hundred two billion, four hundred thirty million, two hundred thirty-two thousand, four hundred twenty-one".