242795251 has 2 divisors, whose sum is σ = 242795252. Its totient is φ = 242795250.

The previous prime is 242795237. The next prime is 242795257. The reversal of 242795251 is 152597242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242795251 - 2⁵ = 242795219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242795251.

It is not a weakly prime, because it can be changed into another prime (242795257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121397625 + 121397626.

It is an arithmetic number, because the mean of its divisors is an integer number (121397626).

Almost surely, 2^242795251 is an apocalyptic number.

242795251 is a deficient number, since it is larger than the sum of its proper divisors (1).

242795251 is an equidigital number, since it uses as much as digits as its factorization.

242795251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 37.

The square root of 242795251 is about 15581.8885569112. Note that the first 3 decimals coincide. The cubic root of 242795251 is about 623.8498322008.

The spelling of 242795251 in words is "two hundred forty-two million, seven hundred ninety-five thousand, two hundred fifty-one".