123423253 has 2 divisors, whose sum is σ = 123423254. Its totient is φ = 123423252.

The previous prime is 123423239. The next prime is 123423257. The reversal of 123423253 is 352324321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110628324 + 12794929 = 10518^2 + 3577^2 .

It is a cyclic number.

It is not a de Polignac number, because 123423253 - 2¹⁷ = 123292181 is a prime.

It is a super-2 number, since 2×123423253² = 30466598762204018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123423257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61711626 + 61711627.

It is an arithmetic number, because the mean of its divisors is an integer number (61711627).

Almost surely, 2^123423253 is an apocalyptic number.

It is an amenable number.

123423253 is a deficient number, since it is larger than the sum of its proper divisors (1).

123423253 is an equidigital number, since it uses as much as digits as its factorization.

123423253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 25.

The square root of 123423253 is about 11109.6018380498. The cubic root of 123423253 is about 497.8887686180. Note that the first 3 decimals are identical.

Adding to 123423253 its reverse (352324321), we get a palindrome (475747574).

The spelling of 123423253 in words is "one hundred twenty-three million, four hundred twenty-three thousand, two hundred fifty-three".