259442123 has 2 divisors, whose sum is σ = 259442124. Its totient is φ = 259442122.

The previous prime is 259442111. The next prime is 259442129. The reversal of 259442123 is 321244952.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 259442123 - 2⁶ = 259442059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 259442123.

It is not a weakly prime, because it can be changed into another prime (259442129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129721061 + 129721062.

It is an arithmetic number, because the mean of its divisors is an integer number (129721062).

Almost surely, 2^259442123 is an apocalyptic number.

259442123 is a deficient number, since it is larger than the sum of its proper divisors (1).

259442123 is an equidigital number, since it uses as much as digits as its factorization.

259442123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 32.

The square root of 259442123 is about 16107.2071756714. The cubic root of 259442123 is about 637.7936091084.

The spelling of 259442123 in words is "two hundred fifty-nine million, four hundred forty-two thousand, one hundred twenty-three".