242881489 has 4 divisors (see below), whose sum is σ = 245807856. Its totient is φ = 239955124.

The previous prime is 242881481. The next prime is 242881493. The reversal of 242881489 is 984188242.

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.

It is a cyclic number.

It is not a de Polignac number, because 242881489 - 2³ = 242881481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242881481) 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, 1463059 + ... + 1463224.

It is an arithmetic number, because the mean of its divisors is an integer number (61451964).

Almost surely, 2^242881489 is an apocalyptic number.

It is an amenable number.

242881489 is a deficient number, since it is larger than the sum of its proper divisors (2926367).

242881489 is an equidigital number, since it uses as much as digits as its factorization.

242881489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2926366.

The product of its digits is 294912, while the sum is 46.

The square root of 242881489 is about 15584.6555624435. The cubic root of 242881489 is about 623.9236848170.

The spelling of 242881489 in words is "two hundred forty-two million, eight hundred eighty-one thousand, four hundred eighty-nine".