421925430 has 64 divisors (see below), whose sum is σ = 1043368128. Its totient is φ = 109117440.

The previous prime is 421925429. The next prime is 421925443. The reversal of 421925430 is 34529124.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 657910 + ... + 658550.

It is an arithmetic number, because the mean of its divisors is an integer number (16302627).

Almost surely, 2^421925430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421925430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (521684064).

421925430 is an abundant number, since it is smaller than the sum of its proper divisors (621442698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421925430 is a wasteful number, since it uses less digits than its factorization.

421925430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 421925430 is about 20540.8234985845. The cubic root of 421925430 is about 750.0298832538.

The spelling of 421925430 in words is "four hundred twenty-one million, nine hundred twenty-five thousand, four hundred thirty".