242377913 has 2 divisors, whose sum is σ = 242377914. Its totient is φ = 242377912.

The previous prime is 242377873. The next prime is 242377921. The reversal of 242377913 is 319773242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178569769 + 63808144 = 13363^2 + 7988^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242377913 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (242377943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121188956 + 121188957.

It is an arithmetic number, because the mean of its divisors is an integer number (121188957).

Almost surely, 2^242377913 is an apocalyptic number.

It is an amenable number.

242377913 is a deficient number, since it is larger than the sum of its proper divisors (1).

242377913 is an equidigital number, since it uses as much as digits as its factorization.

242377913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 38.

The square root of 242377913 is about 15568.4910315676. The cubic root of 242377913 is about 623.4921844060.

The spelling of 242377913 in words is "two hundred forty-two million, three hundred seventy-seven thousand, nine hundred thirteen".