242281690 has 16 divisors (see below), whose sum is σ = 498408192. Its totient is φ = 83067984.

The previous prime is 242281687. The next prime is 242281717. The reversal of 242281690 is 96182242.

It is a super-2 number, since 2×242281690² = 117400834618512200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1730514 + ... + 1730653.

It is an arithmetic number, because the mean of its divisors is an integer number (31150512).

Almost surely, 2^242281690 is an apocalyptic number.

242281690 is an abundant number, since it is smaller than the sum of its proper divisors (256126502).

242281690 is a wasteful number, since it uses less digits than its factorization.

242281690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3461181.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 242281690 is about 15565.4004124533. The cubic root of 242281690 is about 623.4096655705.

The spelling of 242281690 in words is "two hundred forty-two million, two hundred eighty-one thousand, six hundred ninety".