242489057 has 2 divisors, whose sum is σ = 242489058. Its totient is φ = 242489056.

The previous prime is 242489033. The next prime is 242489059. The reversal of 242489057 is 750984242.

242489057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143904016 + 98585041 = 11996^2 + 9929^2 .

It is a cyclic number.

It is not a de Polignac number, because 242489057 - 2⁶ = 242488993 is a prime.

Together with 242489059, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (242489059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121244528 + 121244529.

It is an arithmetic number, because the mean of its divisors is an integer number (121244529).

Almost surely, 2^242489057 is an apocalyptic number.

It is an amenable number.

242489057 is a deficient number, since it is larger than the sum of its proper divisors (1).

242489057 is an equidigital number, since it uses as much as digits as its factorization.

242489057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 242489057 is about 15572.0601398787. The cubic root of 242489057 is about 623.5874720018.

The spelling of 242489057 in words is "two hundred forty-two million, four hundred eighty-nine thousand, fifty-seven".