242881418489 has 4 divisors (see below), whose sum is σ = 243970573056. Its totient is φ = 241792263924.

The previous prime is 242881418441. The next prime is 242881418503. The reversal of 242881418489 is 984814188242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 984814188242 = 2 ⋅492407094121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242881418489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242881417489) 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, 544576949 + ... + 544577394.

It is an arithmetic number, because the mean of its divisors is an integer number (60992643264).

Almost surely, 2^242881418489 is an apocalyptic number.

It is an amenable number.

242881418489 is a deficient number, since it is larger than the sum of its proper divisors (1089154567).

242881418489 is a wasteful number, since it uses less digits than its factorization.

242881418489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089154566.

The product of its digits is 9437184, while the sum is 59.

The spelling of 242881418489 in words is "two hundred forty-two billion, eight hundred eighty-one million, four hundred eighteen thousand, four hundred eighty-nine".