242731015 has 32 divisors (see below), whose sum is σ = 324648000. Its totient is φ = 173365248.

The previous prime is 242731009. The next prime is 242731031. The reversal of 242731015 is 510137242.

It is a happy number.

It is not a de Polignac number, because 242731015 - 2³ = 242731007 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144601 + ... + 146269.

It is an arithmetic number, because the mean of its divisors is an integer number (10145250).

Almost surely, 2^242731015 is an apocalyptic number.

242731015 is a deficient number, since it is larger than the sum of its proper divisors (81916985).

242731015 is a wasteful number, since it uses less digits than its factorization.

242731015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 242731015 is about 15579.8271813265. The cubic root of 242731015 is about 623.7948103223.

Adding to 242731015 its reverse (510137242), we get a palindrome (752868257).

The spelling of 242731015 in words is "two hundred forty-two million, seven hundred thirty-one thousand, fifteen".