420502166 has 32 divisors (see below), whose sum is σ = 747540480. Its totient is φ = 173599200.

The previous prime is 420502163. The next prime is 420502217. The reversal of 420502166 is 661205024.

It is a super-2 number, since 2×420502166² = 353644143221383112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420502163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97271 + ... + 101501.

It is an arithmetic number, because the mean of its divisors is an integer number (23360640).

Almost surely, 2^420502166 is an apocalyptic number.

420502166 is a deficient number, since it is larger than the sum of its proper divisors (327038314).

420502166 is a wasteful number, since it uses less digits than its factorization.

420502166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4500.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 420502166 is about 20506.1494679035. The cubic root of 420502166 is about 749.1855846978.

The spelling of 420502166 in words is "four hundred twenty million, five hundred two thousand, one hundred sixty-six".