239245121 has 2 divisors, whose sum is σ = 239245122. Its totient is φ = 239245120.

The previous prime is 239245091. The next prime is 239245129. The reversal of 239245121 is 121542932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200618896 + 38626225 = 14164^2 + 6215^2 .

It is a cyclic number.

It is not a de Polignac number, because 239245121 - 2¹⁸ = 238982977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (239245129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119622560 + 119622561.

It is an arithmetic number, because the mean of its divisors is an integer number (119622561).

Almost surely, 2^239245121 is an apocalyptic number.

It is an amenable number.

239245121 is a deficient number, since it is larger than the sum of its proper divisors (1).

239245121 is an equidigital number, since it uses as much as digits as its factorization.

239245121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 29.

The square root of 239245121 is about 15467.5505817825. The cubic root of 239245121 is about 620.7942656116.

The spelling of 239245121 in words is "two hundred thirty-nine million, two hundred forty-five thousand, one hundred twenty-one".