290239542 has 12 divisors (see below), whose sum is σ = 628852380. Its totient is φ = 96746508.

The previous prime is 290239541. The next prime is 290239549. The reversal of 290239542 is 245932092.

290239542 is a `hidden beast` number, since 2 + 90 + 23 + 9 + 542 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 290239497 and 290239506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290239541) 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 5 ways as a sum of consecutive naturals, for example, 8062192 + ... + 8062227.

It is an arithmetic number, because the mean of its divisors is an integer number (52404365).

Almost surely, 2^290239542 is an apocalyptic number.

290239542 is an abundant number, since it is smaller than the sum of its proper divisors (338612838).

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

290239542 is a wasteful number, since it uses less digits than its factorization.

290239542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16124427 (or 16124424 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 290239542 is about 17036.4181094501. The cubic root of 290239542 is about 662.0927922185.

The spelling of 290239542 in words is "two hundred ninety million, two hundred thirty-nine thousand, five hundred forty-two".