290739842 has 8 divisors (see below), whose sum is σ = 440111100. Its totient is φ = 144036144.

The previous prime is 290739809. The next prime is 290739853. The reversal of 290739842 is 248937092.

It can be written as a sum of positive squares in 2 ways, for example, as 284293321 + 6446521 = 16861^2 + 2539^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 290739793 and 290739802.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 666617 + ... + 667052.

Almost surely, 2^290739842 is an apocalyptic number.

290739842 is a deficient number, since it is larger than the sum of its proper divisors (149371258).

290739842 is a wasteful number, since it uses less digits than its factorization.

290739842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333780.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 290739842 is about 17051.0950381493. The cubic root of 290739842 is about 662.4730010120.

The spelling of 290739842 in words is "two hundred ninety million, seven hundred thirty-nine thousand, eight hundred forty-two".