242515704215 has 4 divisors (see below), whose sum is σ = 291018845064. Its totient is φ = 194012563368.

The previous prime is 242515704187. The next prime is 242515704251. The reversal of 242515704215 is 512407515242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242515704215 - 2⁸ = 242515703959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24251570417 + ... + 24251570426.

It is an arithmetic number, because the mean of its divisors is an integer number (72754711266).

Almost surely, 2^242515704215 is an apocalyptic number.

242515704215 is a deficient number, since it is larger than the sum of its proper divisors (48503140849).

242515704215 is an equidigital number, since it uses as much as digits as its factorization.

242515704215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48503140848.

The product of its (nonzero) digits is 112000, while the sum is 38.

The spelling of 242515704215 in words is "two hundred forty-two billion, five hundred fifteen million, seven hundred four thousand, two hundred fifteen".