123901 has 4 divisors (see below), whose sum is σ = 129312. Its totient is φ = 118492.

The previous prime is 123887. The next prime is 123911. The reversal of 123901 is 109321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123901 - 2¹¹ = 121853 is a prime.

It is a Duffinian number.

123901 is a lucky number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2671 + ... + 2716.

It is an arithmetic number, because the mean of its divisors is an integer number (32328).

2¹²³⁹⁰¹ is an apocalyptic number.

It is an amenable number.

123901 is a deficient number, since it is larger than the sum of its proper divisors (5411).

123901 is an equidigital number, since it uses as much as digits as its factorization.

123901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5410.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 123901 is about 351.9957386106. The cubic root of 123901 is about 49.8530351164.

It can be divided in two parts, 123 and 901, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 123901 in words is "one hundred twenty-three thousand, nine hundred one".