242472779 has 2 divisors, whose sum is σ = 242472780. Its totient is φ = 242472778.

The previous prime is 242472761. The next prime is 242472809. The reversal of 242472779 is 977274242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242472779 - 2¹² = 242468683 is a prime.

It is not a weakly prime, because it can be changed into another prime (242472709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121236389 + 121236390.

It is an arithmetic number, because the mean of its divisors is an integer number (121236390).

Almost surely, 2^242472779 is an apocalyptic number.

242472779 is a deficient number, since it is larger than the sum of its proper divisors (1).

242472779 is an equidigital number, since it uses as much as digits as its factorization.

242472779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 395136, while the sum is 44.

The square root of 242472779 is about 15571.5374642326. The cubic root of 242472779 is about 623.5735181294.

The spelling of 242472779 in words is "two hundred forty-two million, four hundred seventy-two thousand, seven hundred seventy-nine".