421252430 has 16 divisors (see below), whose sum is σ = 758493504. Its totient is φ = 168447840.

The previous prime is 421252421. The next prime is 421252451. The reversal of 421252430 is 34252124.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 421252396 and 421252405.

It is a congruent number.

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, 48284 + ... + 56336.

It is an arithmetic number, because the mean of its divisors is an integer number (47405844).

Almost surely, 2^421252430 is an apocalyptic number.

421252430 is a deficient number, since it is larger than the sum of its proper divisors (337241074).

421252430 is a wasteful number, since it uses less digits than its factorization.

421252430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13291.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 421252430 is about 20524.4349495912. The cubic root of 421252430 is about 749.6308880012.

The spelling of 421252430 in words is "four hundred twenty-one million, two hundred fifty-two thousand, four hundred thirty".