242355961 has 16 divisors (see below), whose sum is σ = 263789568. Its totient is φ = 221760000.

The previous prime is 242355943. The next prime is 242355977. The reversal of 242355961 is 169553242.

It is a 4-Lehmer number, since φ(242355961) divides (242355961-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 242355961 - 2¹⁷ = 242224889 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 242355961.

It is not an unprimeable number, because it can be changed into a prime (242355161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322336 + ... + 323086.

It is an arithmetic number, because the mean of its divisors is an integer number (16486848).

Almost surely, 2^242355961 is an apocalyptic number.

It is an amenable number.

242355961 is a deficient number, since it is larger than the sum of its proper divisors (21433607).

242355961 is a wasteful number, since it uses less digits than its factorization.

242355961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272.

The product of its digits is 64800, while the sum is 37.

The square root of 242355961 is about 15567.7860018694. The cubic root of 242355961 is about 623.4733607524.

The spelling of 242355961 in words is "two hundred forty-two million, three hundred fifty-five thousand, nine hundred sixty-one".