242690290 has 16 divisors (see below), whose sum is σ = 437059800. Its totient is φ = 97027840.

The previous prime is 242690219. The next prime is 242690293. The reversal of 242690290 is 92096242.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 229007689 + 13682601 = 15133^2 + 3699^2 .

It is not an unprimeable number, because it can be changed into a prime (242690293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20730 + ... + 30250.

Almost surely, 2^242690290 is an apocalyptic number.

242690290 is a deficient number, since it is larger than the sum of its proper divisors (194369510).

242690290 is a wasteful number, since it uses less digits than its factorization.

242690290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12077.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 242690290 is about 15578.5201479473. The cubic root of 242690290 is about 623.7599219576.

The spelling of 242690290 in words is "two hundred forty-two million, six hundred ninety thousand, two hundred ninety".