242517393 has 18 divisors (see below), whose sum is σ = 371203794. Its totient is φ = 152046912.

The previous prime is 242517389. The next prime is 242517397. The reversal of 242517393 is 393715242.

It is an interprime number because it is at equal distance from previous prime (242517389) and next prime (242517397).

It can be written as a sum of positive squares in only one way, i.e., 228251664 + 14265729 = 15108^2 + 3777^2 .

It is not a de Polignac number, because 242517393 - 2² = 242517389 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242517397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 191998 + ... + 193256.

It is an arithmetic number, because the mean of its divisors is an integer number (20622433).

Almost surely, 2^242517393 is an apocalyptic number.

It is an amenable number.

242517393 is a deficient number, since it is larger than the sum of its proper divisors (128686401).

242517393 is an equidigital number, since it uses as much as digits as its factorization.

242517393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2541 (or 1279 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 242517393 is about 15572.9699479579. The cubic root of 242517393 is about 623.6117607767.

The spelling of 242517393 in words is "two hundred forty-two million, five hundred seventeen thousand, three hundred ninety-three".