265142243 has 2 divisors, whose sum is σ = 265142244. Its totient is φ = 265142242.

The previous prime is 265142239. The next prime is 265142261. The reversal of 265142243 is 342241562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 265142243 - 2² = 265142239 is a prime.

It is not a weakly prime, because it can be changed into another prime (265142443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132571121 + 132571122.

It is an arithmetic number, because the mean of its divisors is an integer number (132571122).

Almost surely, 2^265142243 is an apocalyptic number.

265142243 is a deficient number, since it is larger than the sum of its proper divisors (1).

265142243 is an equidigital number, since it uses as much as digits as its factorization.

265142243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 29.

The square root of 265142243 is about 16283.1889689950. The cubic root of 265142243 is about 642.4307327407.

The spelling of 265142243 in words is "two hundred sixty-five million, one hundred forty-two thousand, two hundred forty-three".