123012137 has 8 divisors (see below), whose sum is σ = 129914400. Its totient is φ = 116152704.

The previous prime is 123012107. The next prime is 123012143. The reversal of 123012137 is 731210321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123012137 - 2¹⁰ = 123011113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123012107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4712 + ... + 16377.

It is an arithmetic number, because the mean of its divisors is an integer number (16239300).

Almost surely, 2^123012137 is an apocalyptic number.

It is an amenable number.

123012137 is a deficient number, since it is larger than the sum of its proper divisors (6902263).

123012137 is a wasteful number, since it uses less digits than its factorization.

123012137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21415.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 123012137 is about 11091.0836711297. The cubic root of 123012137 is about 497.3353404054.

Adding to 123012137 its reverse (731210321), we get a palindrome (854222458).

The spelling of 123012137 in words is "one hundred twenty-three million, twelve thousand, one hundred thirty-seven".