290251242 has 32 divisors (see below), whose sum is σ = 647708160. Its totient is φ = 96344640.

The previous prime is 290251231. The next prime is 290251253. The reversal of 290251242 is 242152092.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (290251231) and next prime (290251253).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1863 + ... + 24165.

It is an arithmetic number, because the mean of its divisors is an integer number (20240880).

Almost surely, 2^290251242 is an apocalyptic number.

290251242 is an abundant number, since it is smaller than the sum of its proper divisors (357456918).

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

290251242 is a wasteful number, since it uses less digits than its factorization.

290251242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22555 (or 22549 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 290251242 is about 17036.7614880293. The cubic root of 290251242 is about 662.1016887567.

The spelling of 290251242 in words is "two hundred ninety million, two hundred fifty-one thousand, two hundred forty-two".