242149637 has 2 divisors, whose sum is σ = 242149638. Its totient is φ = 242149636.

The previous prime is 242149631. The next prime is 242149651. The reversal of 242149637 is 736941242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238362721 + 3786916 = 15439^2 + 1946^2 .

It is a cyclic number.

It is not a de Polignac number, because 242149637 - 2¹⁴ = 242133253 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242149637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242149631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121074818 + 121074819.

It is an arithmetic number, because the mean of its divisors is an integer number (121074819).

Almost surely, 2^242149637 is an apocalyptic number.

It is an amenable number.

242149637 is a deficient number, since it is larger than the sum of its proper divisors (1).

242149637 is an equidigital number, since it uses as much as digits as its factorization.

242149637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 38.

The square root of 242149637 is about 15561.1579581984. The cubic root of 242149637 is about 623.2963841012.

The spelling of 242149637 in words is "two hundred forty-two million, one hundred forty-nine thousand, six hundred thirty-seven".