242212387 has 2 divisors, whose sum is σ = 242212388. Its totient is φ = 242212386.

The previous prime is 242212381. The next prime is 242212403. The reversal of 242212387 is 783212242.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242212387 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (242212381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121106193 + 121106194.

It is an arithmetic number, because the mean of its divisors is an integer number (121106194).

Almost surely, 2^242212387 is an apocalyptic number.

242212387 is a deficient number, since it is larger than the sum of its proper divisors (1).

242212387 is an equidigital number, since it uses as much as digits as its factorization.

242212387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 31.

The square root of 242212387 is about 15563.1740657232. The cubic root of 242212387 is about 623.3502192292.

The spelling of 242212387 in words is "two hundred forty-two million, two hundred twelve thousand, three hundred eighty-seven".