242757690 has 64 divisors (see below), whose sum is σ = 667097856. Its totient is φ = 55383552.

The previous prime is 242757673. The next prime is 242757701. The reversal of 242757690 is 96757242.

It is a super-2 number, since 2×242757690² = 117862592108272200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199524 + ... + 200736.

It is an arithmetic number, because the mean of its divisors is an integer number (10423404).

Almost surely, 2^242757690 is an apocalyptic number.

242757690 is an abundant number, since it is smaller than the sum of its proper divisors (424340166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242757690 is a wasteful number, since it uses less digits than its factorization.

242757690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183.

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 242757690 is about 15580.6832327726. The cubic root of 242757690 is about 623.8176601932.

The spelling of 242757690 in words is "two hundred forty-two million, seven hundred fifty-seven thousand, six hundred ninety".