242044457 has 2 divisors, whose sum is σ = 242044458. Its totient is φ = 242044456.

The previous prime is 242044409. The next prime is 242044459. The reversal of 242044457 is 754440242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138391696 + 103652761 = 11764^2 + 10181^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242044457 is a prime.

Together with 242044459, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_13267580 and since 242044457 and 13267580 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (242044459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121022228 + 121022229.

It is an arithmetic number, because the mean of its divisors is an integer number (121022229).

Almost surely, 2^242044457 is an apocalyptic number.

It is an amenable number.

242044457 is a deficient number, since it is larger than the sum of its proper divisors (1).

242044457 is an equidigital number, since it uses as much as digits as its factorization.

242044457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35840, while the sum is 32.

The square root of 242044457 is about 15557.7780225841. The cubic root of 242044457 is about 623.2061261258.

Adding to 242044457 its reverse (754440242), we get a palindrome (996484699).

The spelling of 242044457 in words is "two hundred forty-two million, forty-four thousand, four hundred fifty-seven".