123110257 has 2 divisors, whose sum is σ = 123110258. Its totient is φ = 123110256.

The previous prime is 123110233. The next prime is 123110287. The reversal of 123110257 is 752011321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68409441 + 54700816 = 8271^2 + 7396^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123110257 is a prime.

It is a super-2 number, since 2×123110257² = 30312270757212098, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123110287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61555128 + 61555129.

It is an arithmetic number, because the mean of its divisors is an integer number (61555129).

Almost surely, 2^123110257 is an apocalyptic number.

It is an amenable number.

123110257 is a deficient number, since it is larger than the sum of its proper divisors (1).

123110257 is an equidigital number, since it uses as much as digits as its factorization.

123110257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 123110257 is about 11095.5061624065. The cubic root of 123110257 is about 497.4675375904.

Adding to 123110257 its reverse (752011321), we get a palindrome (875121578).

The spelling of 123110257 in words is "one hundred twenty-three million, one hundred ten thousand, two hundred fifty-seven".