290515255398242 has 32 divisors (see below), whose sum is σ = 498608734976640. Its totient is φ = 124360976799360.

The previous prime is 290515255398161. The next prime is 290515255398289. The reversal of 290515255398242 is 242893552515092.

It is a happy number.

It is a super-2 number, since 2×290515255398242² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37764134 + ... + 44801342.

It is an arithmetic number, because the mean of its divisors is an integer number (15581522968020).

Almost surely, 2^{290515255398242} is an apocalyptic number.

290515255398242 is a deficient number, since it is larger than the sum of its proper divisors (208093479578398).

290515255398242 is a wasteful number, since it uses less digits than its factorization.

290515255398242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7040666.

The product of its (nonzero) digits is 77760000, while the sum is 62.

The spelling of 290515255398242 in words is "two hundred ninety trillion, five hundred fifteen billion, two hundred fifty-five million, three hundred ninety-eight thousand, two hundred forty-two".