123801 has 8 divisors (see below), whose sum is σ = 170880. Its totient is φ = 79632.

The previous prime is 123791. The next prime is 123803. The reversal of 123801 is 108321.

It is a happy number.

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

It is not a de Polignac number, because 123801 - 2⁶ = 123737 is a prime.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 625 + ... + 798.

It is an arithmetic number, because the mean of its divisors is an integer number (21360).

2¹²³⁸⁰¹ is an apocalyptic number.

It is an amenable number.

123801 is a deficient number, since it is larger than the sum of its proper divisors (47079).

123801 is a wasteful number, since it uses less digits than its factorization.

123801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 123801 is about 351.8536627634. The cubic root of 123801 is about 49.8396194449.

Subtracting from 123801 its product of nonzero digits (48), we obtain a triangular number (123753 = T₄₉₇).

The spelling of 123801 in words is "one hundred twenty-three thousand, eight hundred one".