290356042 has 8 divisors (see below), whose sum is σ = 435612132. Its totient is φ = 145152000.

The previous prime is 290356021. The next prime is 290356049. The reversal of 290356042 is 240653092.

It can be written as a sum of positive squares in 2 ways, for example, as 289714441 + 641601 = 17021^2 + 801^2 .

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

It is a super-2 number, since 2×290356042² = 168613262251811528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 290355995 and 290356013.

It is not an unprimeable number, because it can be changed into a prime (290356049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7242 + ... + 25162.

Almost surely, 2^290356042 is an apocalyptic number.

290356042 is a deficient number, since it is larger than the sum of its proper divisors (145256090).

290356042 is a wasteful number, since it uses less digits than its factorization.

290356042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26024.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 290356042 is about 17039.8369123651. The cubic root of 290356042 is about 662.1813667476.

The spelling of 290356042 in words is "two hundred ninety million, three hundred fifty-six thousand, forty-two".