242389587 has 16 divisors (see below), whose sum is σ = 373306752. Its totient is φ = 138261120.

The previous prime is 242389583. The next prime is 242389613. The reversal of 242389587 is 785983242.

242389587 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 242389587 - 2² = 242389583 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242389583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215473 + ... + 216594.

It is an arithmetic number, because the mean of its divisors is an integer number (23331672).

Almost surely, 2^242389587 is an apocalyptic number.

242389587 is a deficient number, since it is larger than the sum of its proper divisors (130917165).

242389587 is a wasteful number, since it uses less digits than its factorization.

242389587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432098.

The product of its digits is 967680, while the sum is 48.

The square root of 242389587 is about 15568.8659509933. The cubic root of 242389587 is about 623.5021942990.

The spelling of 242389587 in words is "two hundred forty-two million, three hundred eighty-nine thousand, five hundred eighty-seven".