290871242 has 8 divisors (see below), whose sum is σ = 436390500. Its totient is φ = 145407744.

The previous prime is 290871227. The next prime is 290871257. The reversal of 290871242 is 242178092.

It is an interprime number because it is at equal distance from previous prime (290871227) and next prime (290871257).

It can be written as a sum of positive squares in 2 ways, for example, as 274863241 + 16008001 = 16579^2 + 4001^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3434 + ... + 24362.

Almost surely, 2^290871242 is an apocalyptic number.

290871242 is a deficient number, since it is larger than the sum of its proper divisors (145519258).

290871242 is a wasteful number, since it uses less digits than its factorization.

290871242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27880.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 290871242 is about 17054.9477278589. The cubic root of 290871242 is about 662.5727876357.

The spelling of 290871242 in words is "two hundred ninety million, eight hundred seventy-one thousand, two hundred forty-two".