242143679 has 2 divisors, whose sum is σ = 242143680. Its totient is φ = 242143678.

The previous prime is 242143637. The next prime is 242143691. The reversal of 242143679 is 976341242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242143679 - 2²⁰ = 241095103 is a prime.

It is a super-2 number, since 2×242143679² = 117267122559310082, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242143579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121071839 + 121071840.

It is an arithmetic number, because the mean of its divisors is an integer number (121071840).

Almost surely, 2^242143679 is an apocalyptic number.

242143679 is a deficient number, since it is larger than the sum of its proper divisors (1).

242143679 is an equidigital number, since it uses as much as digits as its factorization.

242143679 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 242143679 is about 15560.9665188252. The cubic root of 242143679 is about 623.2912720688.

The spelling of 242143679 in words is "two hundred forty-two million, one hundred forty-three thousand, six hundred seventy-nine".