242425004021 has 2 divisors, whose sum is σ = 242425004022. Its totient is φ = 242425004020.

The previous prime is 242425003981. The next prime is 242425004027. The reversal of 242425004021 is 120400524242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 236842822225 + 5582181796 = 486665^2 + 74714^2 .

It is a cyclic number.

It is not a de Polignac number, because 242425004021 - 2⁶ = 242425003957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242425004027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121212502010 + 121212502011.

It is an arithmetic number, because the mean of its divisors is an integer number (121212502011).

Almost surely, 2^242425004021 is an apocalyptic number.

It is an amenable number.

242425004021 is a deficient number, since it is larger than the sum of its proper divisors (1).

242425004021 is an equidigital number, since it uses as much as digits as its factorization.

242425004021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 242425004021 its reverse (120400524242), we get a palindrome (362825528263).

The spelling of 242425004021 in words is "two hundred forty-two billion, four hundred twenty-five million, four thousand, twenty-one".