123132257 has 2 divisors, whose sum is σ = 123132258. Its totient is φ = 123132256.

The previous prime is 123132211. The next prime is 123132311. The reversal of 123132257 is 752231321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65918161 + 57214096 = 8119^2 + 7564^2 .

It is a cyclic number.

It is not a de Polignac number, because 123132257 - 2⁶ = 123132193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123132157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61566128 + 61566129.

It is an arithmetic number, because the mean of its divisors is an integer number (61566129).

Almost surely, 2^123132257 is an apocalyptic number.

It is an amenable number.

123132257 is a deficient number, since it is larger than the sum of its proper divisors (1).

123132257 is an equidigital number, since it uses as much as digits as its factorization.

123132257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 26.

The square root of 123132257 is about 11096.4975104760. The cubic root of 123132257 is about 497.4971685739.

Adding to 123132257 its reverse (752231321), we get a palindrome (875363578).

The spelling of 123132257 in words is "one hundred twenty-three million, one hundred thirty-two thousand, two hundred fifty-seven".