420412139 has 16 divisors (see below), whose sum is σ = 484935360. Its totient is φ = 357022080.

The previous prime is 420412117. The next prime is 420412163. The reversal of 420412139 is 931214024.

It is a cyclic number.

It is not a de Polignac number, because 420412139 - 2²⁸ = 151976683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420412439) 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, 492437 + ... + 493289.

It is an arithmetic number, because the mean of its divisors is an integer number (30308460).

Almost surely, 2^420412139 is an apocalyptic number.

420412139 is a deficient number, since it is larger than the sum of its proper divisors (64523221).

420412139 is a wasteful number, since it uses less digits than its factorization.

420412139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 420412139 is about 20503.9542283921. The cubic root of 420412139 is about 749.1321154968.

The spelling of 420412139 in words is "four hundred twenty million, four hundred twelve thousand, one hundred thirty-nine".