242838687 has 16 divisors (see below), whose sum is σ = 398504960. Its totient is φ = 128090592.

The previous prime is 242838679. The next prime is 242838691. The reversal of 242838687 is 786838242.

It is a happy number.

It is not a de Polignac number, because 242838687 - 2³ = 242838679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242838637) 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, 444487 + ... + 445032.

It is an arithmetic number, because the mean of its divisors is an integer number (24906560).

Almost surely, 2^242838687 is an apocalyptic number.

242838687 is a deficient number, since it is larger than the sum of its proper divisors (155666273).

242838687 is a wasteful number, since it uses less digits than its factorization.

242838687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889542.

The product of its digits is 1032192, while the sum is 48.

The square root of 242838687 is about 15583.2822922515. The cubic root of 242838687 is about 623.8870321673.

The spelling of 242838687 in words is "two hundred forty-two million, eight hundred thirty-eight thousand, six hundred eighty-seven".