242120545879 has 2 divisors, whose sum is σ = 242120545880. Its totient is φ = 242120545878.

The previous prime is 242120545829. The next prime is 242120545883. The reversal of 242120545879 is 978545021242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242120545879 - 2²¹ = 242118448727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242120545829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121060272939 + 121060272940.

It is an arithmetic number, because the mean of its divisors is an integer number (121060272940).

Almost surely, 2^242120545879 is an apocalyptic number.

242120545879 is a deficient number, since it is larger than the sum of its proper divisors (1).

242120545879 is an equidigital number, since it uses as much as digits as its factorization.

242120545879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 242120545879 in words is "two hundred forty-two billion, one hundred twenty million, five hundred forty-five thousand, eight hundred seventy-nine".