242659491 has 4 divisors (see below), whose sum is σ = 323545992. Its totient is φ = 161772992.

The previous prime is 242659471. The next prime is 242659511. The reversal of 242659491 is 194956242.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (242659471) and next prime (242659511).

It is a cyclic number.

It is not a de Polignac number, because 242659491 - 2⁶ = 242659427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242659471) 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, 40443246 + ... + 40443251.

It is an arithmetic number, because the mean of its divisors is an integer number (80886498).

Almost surely, 2^242659491 is an apocalyptic number.

242659491 is a deficient number, since it is larger than the sum of its proper divisors (80886501).

242659491 is an equidigital number, since it uses as much as digits as its factorization.

242659491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80886500.

The product of its digits is 155520, while the sum is 42.

The square root of 242659491 is about 15577.5316080565. The cubic root of 242659491 is about 623.7335344240.

The spelling of 242659491 in words is "two hundred forty-two million, six hundred fifty-nine thousand, four hundred ninety-one".