242142515 has 8 divisors (see below), whose sum is σ = 297658368. Its totient is φ = 188989120.

The previous prime is 242142491. The next prime is 242142529. The reversal of 242142515 is 515241242.

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

It is not a de Polignac number, because 242142515 - 2¹⁸ = 241880371 is a prime.

It is a Duffinian 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, 590387 + ... + 590796.

It is an arithmetic number, because the mean of its divisors is an integer number (37207296).

Almost surely, 2^242142515 is an apocalyptic number.

242142515 is a deficient number, since it is larger than the sum of its proper divisors (55515853).

242142515 is a wasteful number, since it uses less digits than its factorization.

242142515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181229.

The product of its digits is 3200, while the sum is 26.

The square root of 242142515 is about 15560.9291175045. The cubic root of 242142515 is about 623.2902733337.

Adding to 242142515 its reverse (515241242), we get a palindrome (757383757).

The spelling of 242142515 in words is "two hundred forty-two million, one hundred forty-two thousand, five hundred fifteen".