123036 has 12 divisors (see below), whose sum is σ = 287112. Its totient is φ = 41008.

The previous prime is 123031. The next prime is 123049. The reversal of 123036 is 630321.

It is a tau number, because it is divible by the number of its divisors (12).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5115 + ... + 5138.

It is an arithmetic number, because the mean of its divisors is an integer number (23926).

2¹²³⁰³⁶ is an apocalyptic number.

It is an amenable number.

123036 is an abundant number, since it is smaller than the sum of its proper divisors (164076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123036 is a wasteful number, since it uses less digits than its factorization.

123036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10260 (or 10258 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 123036 is about 350.7648785155. The cubic root of 123036 is about 49.7367497519.

Adding to 123036 its reverse (630321), we get a palindrome (753357).

The spelling of 123036 in words is "one hundred twenty-three thousand, thirty-six".