242197515 has 24 divisors (see below), whose sum is σ = 479782368. Its totient is φ = 110718720.

The previous prime is 242197493. The next prime is 242197517. The reversal of 242197515 is 515791242.

It is not a de Polignac number, because 242197515 - 2¹³ = 242189323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242197515.

It is not an unprimeable number, because it can be changed into a prime (242197517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 384126 + ... + 384755.

It is an arithmetic number, because the mean of its divisors is an integer number (19990932).

Almost surely, 2^242197515 is an apocalyptic number.

242197515 is a deficient number, since it is larger than the sum of its proper divisors (237584853).

242197515 is a wasteful number, since it uses less digits than its factorization.

242197515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768899 (or 768896 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 242197515 is about 15562.6962638227. The cubic root of 242197515 is about 623.3374609302.

The spelling of 242197515 in words is "two hundred forty-two million, one hundred ninety-seven thousand, five hundred fifteen".