390342 has 16 divisors (see below), whose sum is σ = 793152. Its totient is φ = 128040.

The previous prime is 390323. The next prime is 390343. The reversal of 390342 is 243093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390343) 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 7 ways as a sum of consecutive naturals, for example, 84 + ... + 887.

It is an arithmetic number, because the mean of its divisors is an integer number (49572).

2³⁹⁰³⁴² is an apocalyptic number.

390342 is an abundant number, since it is smaller than the sum of its proper divisors (402810).

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

390342 is a wasteful number, since it uses less digits than its factorization.

390342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 390342 is about 624.7735589796. The cubic root of 390342 is about 73.0827859207.

The spelling of 390342 in words is "three hundred ninety thousand, three hundred forty-two".