242421719 has 2 divisors, whose sum is σ = 242421720. Its totient is φ = 242421718.

The previous prime is 242421677. The next prime is 242421731. The reversal of 242421719 is 917124242.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242421719 - 2¹⁶ = 242356183 is a prime.

It is a super-2 number, since 2×242421719² = 117536579685829922, which contains 22 as substring.

It is a Sophie Germain 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 (242421769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121210859 + 121210860.

It is an arithmetic number, because the mean of its divisors is an integer number (121210860).

Almost surely, 2^242421719 is an apocalyptic number.

242421719 is a deficient number, since it is larger than the sum of its proper divisors (1).

242421719 is an equidigital number, since it uses as much as digits as its factorization.

242421719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 32.

The square root of 242421719 is about 15569.8978480914. The cubic root of 242421719 is about 623.5297442824.

The spelling of 242421719 in words is "two hundred forty-two million, four hundred twenty-one thousand, seven hundred nineteen".