290172542 has 8 divisors (see below), whose sum is σ = 474827832. Its totient is φ = 131896600.

The previous prime is 290172499. The next prime is 290172563. The reversal of 290172542 is 245271092.

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 = 290172499 and 290172508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6594809 + ... + 6594852.

It is an arithmetic number, because the mean of its divisors is an integer number (59353479).

Almost surely, 2^290172542 is an apocalyptic number.

290172542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

290172542 is a deficient number, since it is larger than the sum of its proper divisors (184655290).

290172542 is a wasteful number, since it uses less digits than its factorization.

290172542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13189674.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 290172542 is about 17034.4516201726. The cubic root of 290172542 is about 662.0418416248.

The spelling of 290172542 in words is "two hundred ninety million, one hundred seventy-two thousand, five hundred forty-two".