242993090 has 16 divisors (see below), whose sum is σ = 460408320. Its totient is φ = 92081520.

The previous prime is 242993089. The next prime is 242993131. The reversal of 242993090 is 90399242.

It is a Harshad number since it is a multiple of its sum of digits (38).

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 7 ways as a sum of consecutive naturals, for example, 639266 + ... + 639645.

It is an arithmetic number, because the mean of its divisors is an integer number (28775520).

Almost surely, 2^242993090 is an apocalyptic number.

242993090 is a deficient number, since it is larger than the sum of its proper divisors (217415230).

242993090 is a wasteful number, since it uses less digits than its factorization.

242993090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278937.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 242993090 is about 15588.2356281909. The cubic root of 242993090 is about 624.0192318886.

The spelling of 242993090 in words is "two hundred forty-two million, nine hundred ninety-three thousand, ninety".