242053621 has 2 divisors, whose sum is σ = 242053622. Its totient is φ = 242053620.

The previous prime is 242053601. The next prime is 242053631. The reversal of 242053621 is 126350242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 234518596 + 7535025 = 15314^2 + 2745^2 .

It is a cyclic number.

It is not a de Polignac number, because 242053621 - 2¹⁵ = 242020853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242053601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121026810 + 121026811.

It is an arithmetic number, because the mean of its divisors is an integer number (121026811).

Almost surely, 2^242053621 is an apocalyptic number.

It is an amenable number.

242053621 is a deficient number, since it is larger than the sum of its proper divisors (1).

242053621 is an equidigital number, since it uses as much as digits as its factorization.

242053621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 242053621 is about 15558.0725348611. The cubic root of 242053621 is about 623.2139910568.

The spelling of 242053621 in words is "two hundred forty-two million, fifty-three thousand, six hundred twenty-one".