242597307277 has 4 divisors (see below), whose sum is σ = 261258638620. Its totient is φ = 223935975936.

The previous prime is 242597307187. The next prime is 242597307287. The reversal of 242597307277 is 772703795242.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65014290441 + 177583016836 = 254979^2 + 421406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242597307277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242597307287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9330665652 + ... + 9330665677.

It is an arithmetic number, because the mean of its divisors is an integer number (65314659655).

Almost surely, 2^242597307277 is an apocalyptic number.

It is an amenable number.

242597307277 is a deficient number, since it is larger than the sum of its proper divisors (18661331343).

242597307277 is a wasteful number, since it uses less digits than its factorization.

242597307277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18661331342.

The product of its (nonzero) digits is 10372320, while the sum is 55.

The spelling of 242597307277 in words is "two hundred forty-two billion, five hundred ninety-seven million, three hundred seven thousand, two hundred seventy-seven".