421072715 has 16 divisors (see below), whose sum is σ = 578266560. Its totient is φ = 288337920.

The previous prime is 421072709. The next prime is 421072723. The reversal of 421072715 is 517270124.

It is not a de Polignac number, because 421072715 - 2⁸ = 421072459 is a prime.

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, 18731 + ... + 34539.

It is an arithmetic number, because the mean of its divisors is an integer number (36141660).

Almost surely, 2^421072715 is an apocalyptic number.

421072715 is a deficient number, since it is larger than the sum of its proper divisors (157193845).

421072715 is a wasteful number, since it uses less digits than its factorization.

421072715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16582.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 421072715 is about 20520.0564083045. The cubic root of 421072715 is about 749.5242701571.

The spelling of 421072715 in words is "four hundred twenty-one million, seventy-two thousand, seven hundred fifteen".