242615979 has 20 divisors (see below), whose sum is σ = 362854800. Its totient is φ = 161552880.

The previous prime is 242615957. The next prime is 242615981. The reversal of 242615979 is 979516242.

242615979 is a `hidden beast` number, since 2 + 426 + 159 + 79 = 666.

It is not a de Polignac number, because 242615979 - 2⁹ = 242615467 is a prime.

It is a super-2 number, since 2×242615979² = 117725026532256882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (242615909) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 112249 + ... + 114389.

It is an arithmetic number, because the mean of its divisors is an integer number (18142740).

Almost surely, 2^242615979 is an apocalyptic number.

242615979 is a deficient number, since it is larger than the sum of its proper divisors (120238821).

242615979 is a wasteful number, since it uses less digits than its factorization.

242615979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3552 (or 3543 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 242615979 is about 15576.1349185220. The cubic root of 242615979 is about 623.6962510195.

The spelling of 242615979 in words is "two hundred forty-two million, six hundred fifteen thousand, nine hundred seventy-nine".