123602251 has 2 divisors, whose sum is σ = 123602252. Its totient is φ = 123602250.

The previous prime is 123602243. The next prime is 123602273. The reversal of 123602251 is 152206321.

It is an a-pointer prime, because the next prime (123602273) can be obtained adding 123602251 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123602251 - 2³ = 123602243 is a prime.

It is not a weakly prime, because it can be changed into another prime (123602051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61801125 + 61801126.

It is an arithmetic number, because the mean of its divisors is an integer number (61801126).

Almost surely, 2^123602251 is an apocalyptic number.

123602251 is a deficient number, since it is larger than the sum of its proper divisors (1).

123602251 is an equidigital number, since it uses as much as digits as its factorization.

123602251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 123602251 is about 11117.6549235889. The cubic root of 123602251 is about 498.1293446922.

Adding to 123602251 its reverse (152206321), we get a palindrome (275808572).

The spelling of 123602251 in words is "one hundred twenty-three million, six hundred two thousand, two hundred fifty-one".