265404043 has 2 divisors, whose sum is σ = 265404044. Its totient is φ = 265404042.

The previous prime is 265404031. The next prime is 265404053. The reversal of 265404043 is 340404562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265404043 - 2⁹ = 265403531 is a prime.

It is not a weakly prime, because it can be changed into another prime (265404023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132702021 + 132702022.

It is an arithmetic number, because the mean of its divisors is an integer number (132702022).

Almost surely, 2^265404043 is an apocalyptic number.

265404043 is a deficient number, since it is larger than the sum of its proper divisors (1).

265404043 is an equidigital number, since it uses as much as digits as its factorization.

265404043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 265404043 is about 16291.2259514132. The cubic root of 265404043 is about 642.6421073827.

The spelling of 265404043 in words is "two hundred sixty-five million, four hundred four thousand, forty-three".