239161121 has 2 divisors, whose sum is σ = 239161122. Its totient is φ = 239161120.

The previous prime is 239161103. The next prime is 239161127. The reversal of 239161121 is 121161932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235315600 + 3845521 = 15340^2 + 1961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239161121 is a prime.

It is not a weakly prime, because it can be changed into another prime (239161127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119580560 + 119580561.

It is an arithmetic number, because the mean of its divisors is an integer number (119580561).

Almost surely, 2^239161121 is an apocalyptic number.

It is an amenable number.

239161121 is a deficient number, since it is larger than the sum of its proper divisors (1).

239161121 is an equidigital number, since it uses as much as digits as its factorization.

239161121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 26.

The square root of 239161121 is about 15464.8349813375. The cubic root of 239161121 is about 620.7216025868.

The spelling of 239161121 in words is "two hundred thirty-nine million, one hundred sixty-one thousand, one hundred twenty-one".