242775750047257 has 32 divisors (see below), whose sum is σ = 291261190348800. Its totient is φ = 197849895036288.

The previous prime is 242775750047227. The next prime is 242775750047267. The reversal of 242775750047257 is 752740057577242.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242775750047257 is a prime.

It is a super-2 number, since 2×242775750047257² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (242775750047227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2429432469 + ... + 2429532397.

It is an arithmetic number, because the mean of its divisors is an integer number (9101912198400).

Almost surely, 2^{242775750047257} is an apocalyptic number.

It is an amenable number.

242775750047257 is a deficient number, since it is larger than the sum of its proper divisors (48485440301543).

242775750047257 is a wasteful number, since it uses less digits than its factorization.

242775750047257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190485.

The product of its (nonzero) digits is 268912000, while the sum is 64.

The spelling of 242775750047257 in words is "two hundred forty-two trillion, seven hundred seventy-five billion, seven hundred fifty million, forty-seven thousand, two hundred fifty-seven".