242574321 has 16 divisors (see below), whose sum is σ = 355380480. Its totient is φ = 145954320.

The previous prime is 242574317. The next prime is 242574323. The reversal of 242574321 is 123475242.

It is not a de Polignac number, because 242574321 - 2² = 242574317 is a prime.

It is a super-2 number, since 2×242574321² = 117684602417222082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (242574323) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 21855 + ... + 31028.

It is an arithmetic number, because the mean of its divisors is an integer number (22211280).

Almost surely, 2^242574321 is an apocalyptic number.

It is an amenable number.

242574321 is a deficient number, since it is larger than the sum of its proper divisors (112806159).

242574321 is a wasteful number, since it uses less digits than its factorization.

242574321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53036.

The product of its digits is 13440, while the sum is 30.

The square root of 242574321 is about 15574.7976230833. The cubic root of 242574321 is about 623.6605520440.

The spelling of 242574321 in words is "two hundred forty-two million, five hundred seventy-four thousand, three hundred twenty-one".