242210591 has 4 divisors (see below), whose sum is σ = 276812112. Its totient is φ = 207609072.

The previous prime is 242210587. The next prime is 242210623. The reversal of 242210591 is 195012242.

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

It is a cyclic number.

It is not a de Polignac number, because 242210591 - 2² = 242210587 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242210591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242212591) 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, 17300750 + ... + 17300763.

It is an arithmetic number, because the mean of its divisors is an integer number (69203028).

Almost surely, 2^242210591 is an apocalyptic number.

242210591 is a deficient number, since it is larger than the sum of its proper divisors (34601521).

242210591 is an equidigital number, since it uses as much as digits as its factorization.

242210591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34601520.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 242210591 is about 15563.1163653042. The cubic root of 242210591 is about 623.3486785156.

The spelling of 242210591 in words is "two hundred forty-two million, two hundred ten thousand, five hundred ninety-one".