123030137 has 2 divisors, whose sum is σ = 123030138. Its totient is φ = 123030136.

The previous prime is 123030133. The next prime is 123030179. The reversal of 123030137 is 731030321.

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., 79852096 + 43178041 = 8936^2 + 6571^2 .

It is a cyclic number.

It is not a de Polignac number, because 123030137 - 2² = 123030133 is a prime.

It is a super-2 number, since 2×123030137² = 30272829220477538, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123030133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61515068 + 61515069.

It is an arithmetic number, because the mean of its divisors is an integer number (61515069).

Almost surely, 2^123030137 is an apocalyptic number.

It is an amenable number.

123030137 is a deficient number, since it is larger than the sum of its proper divisors (1).

123030137 is an equidigital number, since it uses as much as digits as its factorization.

123030137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 123030137 is about 11091.8951040839. The cubic root of 123030137 is about 497.3595970892.

Adding to 123030137 its reverse (731030321), we get a palindrome (854060458).

The spelling of 123030137 in words is "one hundred twenty-three million, thirty thousand, one hundred thirty-seven".