420392 has 16 divisors (see below), whose sum is σ = 900960. Its totient is φ = 180144.

The previous prime is 420383. The next prime is 420397. The reversal of 420392 is 293024.

It is not an unprimeable number, because it can be changed into a prime (420397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3698 + ... + 3809.

It is an arithmetic number, because the mean of its divisors is an integer number (56310).

2⁴²⁰³⁹² is an apocalyptic number.

It is an amenable number.

420392 is an abundant number, since it is smaller than the sum of its proper divisors (480568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420392 is a wasteful number, since it uses less digits than its factorization.

420392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7520 (or 7516 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 420392 is about 648.3764338716. The cubic root of 420392 is about 74.9120153415.

The spelling of 420392 in words is "four hundred twenty thousand, three hundred ninety-two".