242235891 has 12 divisors (see below), whose sum is σ = 361183680. Its totient is φ = 156281040.

The previous prime is 242235859. The next prime is 242235893. The reversal of 242235891 is 198532242.

It is a happy number.

It is not a de Polignac number, because 242235891 - 2⁵ = 242235859 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (242235893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 433836 + ... + 434393.

It is an arithmetic number, because the mean of its divisors is an integer number (30098640).

Almost surely, 2^242235891 is an apocalyptic number.

242235891 is a deficient number, since it is larger than the sum of its proper divisors (118947789).

242235891 is a wasteful number, since it uses less digits than its factorization.

242235891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868266 (or 868263 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 242235891 is about 15563.9291632929. The cubic root of 242235891 is about 623.3703816300.

The spelling of 242235891 in words is "two hundred forty-two million, two hundred thirty-five thousand, eight hundred ninety-one".