420250977 has 16 divisors (see below), whose sum is σ = 644064000. Its totient is φ = 270505872.

The previous prime is 420250951. The next prime is 420250981. The reversal of 420250977 is 779052024.

It is not a de Polignac number, because 420250977 - 2²⁰ = 419202401 is a prime.

It is a super-2 number, since 2×420250977² = 353221767338909058, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420250907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267577 + ... + 269142.

It is an arithmetic number, because the mean of its divisors is an integer number (40254000).

Almost surely, 2^420250977 is an apocalyptic number.

It is an amenable number.

420250977 is a deficient number, since it is larger than the sum of its proper divisors (223813023).

420250977 is a wasteful number, since it uses less digits than its factorization.

420250977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536757 (or 536751 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 420250977 is about 20500.0238292544. The cubic root of 420250977 is about 749.0363784416.

The spelling of 420250977 in words is "four hundred twenty million, two hundred fifty thousand, nine hundred seventy-seven".