242645759 has 4 divisors (see below), whose sum is σ = 242733720. Its totient is φ = 242557800.

The previous prime is 242645747. The next prime is 242645771. The reversal of 242645759 is 957546242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 957546242 = 2 ⋅478773121.

It is an interprime number because it is at equal distance from previous prime (242645747) and next prime (242645771).

It is a cyclic number.

It is not a de Polignac number, because 242645759 - 2¹⁶ = 242580223 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 (242642759) 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, 39704 + ... + 45405.

It is an arithmetic number, because the mean of its divisors is an integer number (60683430).

Almost surely, 2^242645759 is an apocalyptic number.

242645759 is a deficient number, since it is larger than the sum of its proper divisors (87961).

242645759 is an equidigital number, since it uses as much as digits as its factorization.

242645759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87960.

The product of its digits is 604800, while the sum is 44.

The square root of 242645759 is about 15577.0908387927. The cubic root of 242645759 is about 623.7217685947.

The spelling of 242645759 in words is "two hundred forty-two million, six hundred forty-five thousand, seven hundred fifty-nine".