242579869 has 4 divisors (see below), whose sum is σ = 277234144. Its totient is φ = 207925596.

The previous prime is 242579837. The next prime is 242579917. The reversal of 242579869 is 968975242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 968975242 = 2 ⋅484487621.

It is a cyclic number.

It is not a de Polignac number, because 242579869 - 2⁵ = 242579837 is a prime.

It is a super-2 number, since 2×242579869² = 117689985688114322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242579819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17327127 + ... + 17327140.

It is an arithmetic number, because the mean of its divisors is an integer number (69308536).

Almost surely, 2^242579869 is an apocalyptic number.

It is an amenable number.

242579869 is a deficient number, since it is larger than the sum of its proper divisors (34654275).

242579869 is an equidigital number, since it uses as much as digits as its factorization.

242579869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34654274.

The product of its digits is 2177280, while the sum is 52.

The square root of 242579869 is about 15574.9757303182. The cubic root of 242579869 is about 623.6653066588.

The spelling of 242579869 in words is "two hundred forty-two million, five hundred seventy-nine thousand, eight hundred sixty-nine".