252784123 has 2 divisors, whose sum is σ = 252784124. Its totient is φ = 252784122.

The previous prime is 252784093. The next prime is 252784139. The reversal of 252784123 is 321487252.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252784123 is a prime.

It is not a weakly prime, because it can be changed into another prime (252784163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126392061 + 126392062.

It is an arithmetic number, because the mean of its divisors is an integer number (126392062).

Almost surely, 2^252784123 is an apocalyptic number.

252784123 is a deficient number, since it is larger than the sum of its proper divisors (1).

252784123 is an equidigital number, since it uses as much as digits as its factorization.

252784123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 34.

The square root of 252784123 is about 15899.1862370374. The cubic root of 252784123 is about 632.2904140848.

The spelling of 252784123 in words is "two hundred fifty-two million, seven hundred eighty-four thousand, one hundred twenty-three".