242213687 has 2 divisors, whose sum is σ = 242213688. Its totient is φ = 242213686.

The previous prime is 242213683. The next prime is 242213693. The reversal of 242213687 is 786312242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242213687 - 2² = 242213683 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242213681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121106843 + 121106844.

It is an arithmetic number, because the mean of its divisors is an integer number (121106844).

Almost surely, 2^242213687 is an apocalyptic number.

242213687 is a deficient number, since it is larger than the sum of its proper divisors (1).

242213687 is an equidigital number, since it uses as much as digits as its factorization.

242213687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 35.

The square root of 242213687 is about 15563.2158309265. The cubic root of 242213687 is about 623.3513344403.

The spelling of 242213687 in words is "two hundred forty-two million, two hundred thirteen thousand, six hundred eighty-seven".