242212687 has 4 divisors (see below), whose sum is σ = 242249200. Its totient is φ = 242176176.

The previous prime is 242212661. The next prime is 242212721. The reversal of 242212687 is 786212242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242212687 - 2¹⁵ = 242179919 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 (242212387) 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, 5187 + ... + 22612.

It is an arithmetic number, because the mean of its divisors is an integer number (60562300).

Almost surely, 2^242212687 is an apocalyptic number.

242212687 is a deficient number, since it is larger than the sum of its proper divisors (36513).

242212687 is an equidigital number, since it uses as much as digits as its factorization.

242212687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36512.

The product of its digits is 21504, while the sum is 34.

The square root of 242212687 is about 15563.1837038570. The cubic root of 242212687 is about 623.3504765860.

The spelling of 242212687 in words is "two hundred forty-two million, two hundred twelve thousand, six hundred eighty-seven".