420163215 has 32 divisors (see below), whose sum is σ = 682525440. Its totient is φ = 220687104.

The previous prime is 420163199. The next prime is 420163229. The reversal of 420163215 is 512361024.

It is not a de Polignac number, because 420163215 - 2⁴ = 420163199 is a prime.

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, 462792 + ... + 463698.

It is an arithmetic number, because the mean of its divisors is an integer number (21328920).

Almost surely, 2^420163215 is an apocalyptic number.

420163215 is a deficient number, since it is larger than the sum of its proper divisors (262362225).

420163215 is a wasteful number, since it uses less digits than its factorization.

420163215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 420163215 is about 20497.8831833924. The cubic root of 420163215 is about 748.9842338020.

The spelling of 420163215 in words is "four hundred twenty million, one hundred sixty-three thousand, two hundred fifteen".