242621597 has 2 divisors, whose sum is σ = 242621598. Its totient is φ = 242621596.

The previous prime is 242621579. The next prime is 242621611. The reversal of 242621597 is 795126242.

Together with previous prime (242621579) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179720836 + 62900761 = 13406^2 + 7931^2 .

It is a cyclic number.

It is not a de Polignac number, because 242621597 - 2²⁰ = 241573021 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242621597.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242621557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121310798 + 121310799.

It is an arithmetic number, because the mean of its divisors is an integer number (121310799).

Almost surely, 2^242621597 is an apocalyptic number.

It is an amenable number.

242621597 is a deficient number, since it is larger than the sum of its proper divisors (1).

242621597 is an equidigital number, since it uses as much as digits as its factorization.

242621597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 38.

The square root of 242621597 is about 15576.3152574670. The cubic root of 242621597 is about 623.7010650724.

The spelling of 242621597 in words is "two hundred forty-two million, six hundred twenty-one thousand, five hundred ninety-seven".