242334139 has 2 divisors, whose sum is σ = 242334140. Its totient is φ = 242334138.

The previous prime is 242334101. The next prime is 242334193. The reversal of 242334139 is 931433242.

Together with next prime (242334193) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242334139 - 2⁹ = 242333627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242334139.

It is not a weakly prime, because it can be changed into another prime (242334539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121167069 + 121167070.

It is an arithmetic number, because the mean of its divisors is an integer number (121167070).

Almost surely, 2^242334139 is an apocalyptic number.

242334139 is a deficient number, since it is larger than the sum of its proper divisors (1).

242334139 is an equidigital number, since it uses as much as digits as its factorization.

242334139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 31.

The square root of 242334139 is about 15567.0851157177. The cubic root of 242334139 is about 623.4546474460.

The spelling of 242334139 in words is "two hundred forty-two million, three hundred thirty-four thousand, one hundred thirty-nine".