242744861 has 4 divisors (see below), whose sum is σ = 243712224. Its totient is φ = 241777500.

The previous prime is 242744851. The next prime is 242744863. The reversal of 242744861 is 168447242.

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.

It is a cyclic number.

It is not a de Polignac number, because 242744861 - 2⁶ = 242744797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242744863) 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, 483305 + ... + 483806.

It is an arithmetic number, because the mean of its divisors is an integer number (60928056).

Almost surely, 2^242744861 is an apocalyptic number.

It is an amenable number.

242744861 is a deficient number, since it is larger than the sum of its proper divisors (967363).

242744861 is an equidigital number, since it uses as much as digits as its factorization.

242744861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967362.

The product of its digits is 86016, while the sum is 38.

The square root of 242744861 is about 15580.2715316518. The cubic root of 242744861 is about 623.8066710491.

The spelling of 242744861 in words is "two hundred forty-two million, seven hundred forty-four thousand, eight hundred sixty-one".