242374939 has 4 divisors (see below), whose sum is σ = 242562256. Its totient is φ = 242187624.

The previous prime is 242374927. The next prime is 242374981. The reversal of 242374939 is 939473242.

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 242374939 - 2¹⁵ = 242342171 is a prime.

It is a super-2 number, since 2×242374939² = 117491222110507442, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242374895 and 242374904.

It is not an unprimeable number, because it can be changed into a prime (242374339) 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, 91704 + ... + 94309.

It is an arithmetic number, because the mean of its divisors is an integer number (60640564).

Almost surely, 2^242374939 is an apocalyptic number.

242374939 is a deficient number, since it is larger than the sum of its proper divisors (187317).

242374939 is a wasteful number, since it uses less digits than its factorization.

242374939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187316.

The product of its digits is 326592, while the sum is 43.

The square root of 242374939 is about 15568.3955178432. The cubic root of 242374939 is about 623.4896342928.

The spelling of 242374939 in words is "two hundred forty-two million, three hundred seventy-four thousand, nine hundred thirty-nine".