420145976 has 32 divisors (see below), whose sum is σ = 814817280. Its totient is φ = 202888800.

The previous prime is 420145969. The next prime is 420146017. The reversal of 420145976 is 679541024.

It is a super-2 number, since 2×420145976² = 353045282297985152, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149141 + ... + 151931.

It is an arithmetic number, because the mean of its divisors is an integer number (25463040).

Almost surely, 2^420145976 is an apocalyptic number.

It is an amenable number.

420145976 is a deficient number, since it is larger than the sum of its proper divisors (394671304).

420145976 is a wasteful number, since it uses less digits than its factorization.

420145976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3435 (or 3431 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 420145976 is about 20497.4626722431. The cubic root of 420145976 is about 748.9739902305.

The spelling of 420145976 in words is "four hundred twenty million, one hundred forty-five thousand, nine hundred seventy-six".