242904047 has 2 divisors, whose sum is σ = 242904048. Its totient is φ = 242904046.

The previous prime is 242903981. The next prime is 242904071. The reversal of 242904047 is 740409242.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242904047 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242904097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121452023 + 121452024.

It is an arithmetic number, because the mean of its divisors is an integer number (121452024).

Almost surely, 2^242904047 is an apocalyptic number.

242904047 is a deficient number, since it is larger than the sum of its proper divisors (1).

242904047 is an equidigital number, since it uses as much as digits as its factorization.

242904047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 242904047 is about 15585.3792703290. The cubic root of 242904047 is about 623.9430001833.

The spelling of 242904047 in words is "two hundred forty-two million, nine hundred four thousand, forty-seven".