242561215 has 8 divisors (see below), whose sum is σ = 313463808. Its totient is φ = 179122080.

The previous prime is 242561183. The next prime is 242561257. The reversal of 242561215 is 512165242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 242561215 - 2⁵ = 242561183 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 1865791 + ... + 1865920.

It is an arithmetic number, because the mean of its divisors is an integer number (39182976).

Almost surely, 2^242561215 is an apocalyptic number.

242561215 is a deficient number, since it is larger than the sum of its proper divisors (70902593).

242561215 is a wasteful number, since it uses less digits than its factorization.

242561215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3731729.

The product of its digits is 4800, while the sum is 28.

The square root of 242561215 is about 15574.3768735703. The cubic root of 242561215 is about 623.6493199642.

The spelling of 242561215 in words is "two hundred forty-two million, five hundred sixty-one thousand, two hundred fifteen".