123506001 has 6 divisors (see below), whose sum is σ = 178397570. Its totient is φ = 82337328.

The previous prime is 123505997. The next prime is 123506017. The reversal of 123506001 is 100605321.

123506001 is a `hidden beast` number, since 12 + 3 + 50 + 600 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 75272976 + 48233025 = 8676^2 + 6945^2 .

It is not a de Polignac number, because 123506001 - 2² = 123505997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123506051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6861436 + ... + 6861453.

Almost surely, 2^123506001 is an apocalyptic number.

It is an amenable number.

123506001 is a deficient number, since it is larger than the sum of its proper divisors (54891569).

123506001 is a wasteful number, since it uses less digits than its factorization.

123506001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13722895 (or 13722892 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 123506001 is about 11113.3253799212. The cubic root of 123506001 is about 498.0000120966. Note that the first 4 decimals are identical.

The spelling of 123506001 in words is "one hundred twenty-three million, five hundred six thousand, one".