242779799 has 2 divisors, whose sum is σ = 242779800. Its totient is φ = 242779798.

The previous prime is 242779787. The next prime is 242779837. The reversal of 242779799 is 997977242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242779799 - 2⁸ = 242779543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242779729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121389899 + 121389900.

It is an arithmetic number, because the mean of its divisors is an integer number (121389900).

Almost surely, 2^242779799 is an apocalyptic number.

242779799 is a deficient number, since it is larger than the sum of its proper divisors (1).

242779799 is an equidigital number, since it uses as much as digits as its factorization.

242779799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4000752, while the sum is 56.

The square root of 242779799 is about 15581.3927169557. The cubic root of 242779799 is about 623.8365975486.

The spelling of 242779799 in words is "two hundred forty-two million, seven hundred seventy-nine thousand, seven hundred ninety-nine".