290042842 has 4 divisors (see below), whose sum is σ = 435064266. Its totient is φ = 145021420.

The previous prime is 290042839. The next prime is 290042843. The reversal of 290042842 is 248240092.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 172948801 + 117094041 = 13151^2 + 10821^2 .

It is not an unprimeable number, because it can be changed into a prime (290042843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72510709 + ... + 72510712.

Almost surely, 2^290042842 is an apocalyptic number.

290042842 is a deficient number, since it is larger than the sum of its proper divisors (145021424).

290042842 is a wasteful number, since it uses less digits than its factorization.

290042842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145021423.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 290042842 is about 17030.6442039049. The cubic root of 290042842 is about 661.9431881100.

The spelling of 290042842 in words is "two hundred ninety million, forty-two thousand, eight hundred forty-two".