242558915 has 8 divisors (see below), whose sum is σ = 297840048. Its totient is φ = 189534240.

The previous prime is 242558903. The next prime is 242558917. The reversal of 242558915 is 519855242.

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

It is not a de Polignac number, because 242558915 - 2¹⁸ = 242296771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242558917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563876 + ... + 564305.

It is an arithmetic number, because the mean of its divisors is an integer number (37230006).

Almost surely, 2^242558915 is an apocalyptic number.

242558915 is a deficient number, since it is larger than the sum of its proper divisors (55281133).

242558915 is a wasteful number, since it uses less digits than its factorization.

242558915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128229.

The product of its digits is 144000, while the sum is 41.

The square root of 242558915 is about 15574.3030341650. The cubic root of 242558915 is about 623.6473487807.

The spelling of 242558915 in words is "two hundred forty-two million, five hundred fifty-eight thousand, nine hundred fifteen".