421624506 has 32 divisors (see below), whose sum is σ = 859576320. Its totient is φ = 137846016.

The previous prime is 421624499. The next prime is 421624513. The reversal of 421624506 is 605426124.

It is an interprime number because it is at equal distance from previous prime (421624499) and next prime (421624513).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64710 + ... + 70926.

It is an arithmetic number, because the mean of its divisors is an integer number (26861760).

Almost surely, 2^421624506 is an apocalyptic number.

421624506 is an abundant number, since it is smaller than the sum of its proper divisors (437951814).

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

421624506 is a wasteful number, since it uses less digits than its factorization.

421624506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6438.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 421624506 is about 20533.4971692598. The cubic root of 421624506 is about 749.8515297218.

The spelling of 421624506 in words is "four hundred twenty-one million, six hundred twenty-four thousand, five hundred six".