123910137 has 12 divisors (see below), whose sum is σ = 192749284. Its totient is φ = 76252320.

The previous prime is 123910121. The next prime is 123910139. The reversal of 123910137 is 731019321.

It can be written as a sum of positive squares in 2 ways, for example, as 52186176 + 71723961 = 7224^2 + 8469^2 .

It is not a de Polignac number, because 123910137 - 2⁴ = 123910121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123910137.

It is not an unprimeable number, because it can be changed into a prime (123910139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 529414 + ... + 529647.

Almost surely, 2^123910137 is an apocalyptic number.

It is an amenable number.

123910137 is a deficient number, since it is larger than the sum of its proper divisors (68839147).

123910137 is a wasteful number, since it uses less digits than its factorization.

123910137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059080 (or 1059077 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 123910137 is about 11131.4930265441. The cubic root of 123910137 is about 498.5426054630.

Adding to 123910137 its reverse (731019321), we get a palindrome (854929458).

The spelling of 123910137 in words is "one hundred twenty-three million, nine hundred ten thousand, one hundred thirty-seven".