242362621 has 2 divisors, whose sum is σ = 242362622. Its totient is φ = 242362620.

The previous prime is 242362607. The next prime is 242362643. The reversal of 242362621 is 126263242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219188025 + 23174596 = 14805^2 + 4814^2 .

It is a cyclic number.

It is not a de Polignac number, because 242362621 - 2⁷ = 242362493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242362621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242360621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121181310 + 121181311.

It is an arithmetic number, because the mean of its divisors is an integer number (121181311).

Almost surely, 2^242362621 is an apocalyptic number.

It is an amenable number.

242362621 is a deficient number, since it is larger than the sum of its proper divisors (1).

242362621 is an equidigital number, since it uses as much as digits as its factorization.

242362621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 28.

The square root of 242362621 is about 15567.9999036485. Note that the first 4 decimals coincide. The cubic root of 242362621 is about 623.4790717659.

The spelling of 242362621 in words is "two hundred forty-two million, three hundred sixty-two thousand, six hundred twenty-one".