253240123 has 2 divisors, whose sum is σ = 253240124. Its totient is φ = 253240122.

The previous prime is 253240103. The next prime is 253240129. The reversal of 253240123 is 321042352.

253240123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253240123 - 2²¹ = 251142971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 253240094 and 253240103.

It is not a weakly prime, because it can be changed into another prime (253240129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126620061 + 126620062.

It is an arithmetic number, because the mean of its divisors is an integer number (126620062).

Almost surely, 2^253240123 is an apocalyptic number.

253240123 is a deficient number, since it is larger than the sum of its proper divisors (1).

253240123 is an equidigital number, since it uses as much as digits as its factorization.

253240123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 253240123 is about 15913.5201322649. The cubic root of 253240123 is about 632.6703841932.

Adding to 253240123 its reverse (321042352), we get a palindrome (574282475).

The spelling of 253240123 in words is "two hundred fifty-three million, two hundred forty thousand, one hundred twenty-three".