420786279 has 16 divisors (see below), whose sum is σ = 628151040. Its totient is φ = 278380440.

The previous prime is 420786271. The next prime is 420786299. The reversal of 420786279 is 972687024.

It is not a de Polignac number, because 420786279 - 2³ = 420786271 is a prime.

It is a super-2 number, since 2×420786279² = 354122185189331682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420786271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55947 + ... + 63020.

It is an arithmetic number, because the mean of its divisors is an integer number (39259440).

Almost surely, 2^420786279 is an apocalyptic number.

420786279 is a deficient number, since it is larger than the sum of its proper divisors (207364761).

420786279 is a wasteful number, since it uses less digits than its factorization.

420786279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119107 (or 119101 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 420786279 is about 20513.0758054466. The cubic root of 420786279 is about 749.3542762139.

The spelling of 420786279 in words is "four hundred twenty million, seven hundred eighty-six thousand, two hundred seventy-nine".