242615505146057 has 2 divisors, whose sum is σ = 242615505146058. Its totient is φ = 242615505146056.

The previous prime is 242615505146039. The next prime is 242615505146237. The reversal of 242615505146057 is 750641505516242.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179699896437961 + 62915608708096 = 13405219^2 + 7931936^2 .

It is a cyclic number.

It is not a de Polignac number, because 242615505146057 - 2⁸ = 242615505145801 is a prime.

It is not a weakly prime, because it can be changed into another prime (242615505146857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121307752573028 + 121307752573029.

It is an arithmetic number, because the mean of its divisors is an integer number (121307752573029).

Almost surely, 2^{242615505146057} is an apocalyptic number.

It is an amenable number.

242615505146057 is a deficient number, since it is larger than the sum of its proper divisors (1).

242615505146057 is an equidigital number, since it uses as much as digits as its factorization.

242615505146057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080000, while the sum is 53.

The spelling of 242615505146057 in words is "two hundred forty-two trillion, six hundred fifteen billion, five hundred five million, one hundred forty-six thousand, fifty-seven".