120001 has 12 divisors (see below), whose sum is σ = 145920. Its totient is φ = 98280.

The previous prime is 119993. The next prime is 120011. The reversal of 120001 is 100021.

It is not a de Polignac number, because 120001 - 2³ = 119993 is a prime.

It is a Duffinian number.

120001 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (120011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1480 + ... + 1558.

It is an arithmetic number, because the mean of its divisors is an integer number (12160).

2¹²⁰⁰⁰¹ is an apocalyptic number.

It is an amenable number.

120001 is a deficient number, since it is larger than the sum of its proper divisors (25919).

120001 is an equidigital number, since it uses as much as digits as its factorization.

120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 4.

The square root of 120001 is about 346.4116048864. The cubic root of 120001 is about 49.3243784980.

Adding to 120001 its reverse (100021), we get a palindrome (220022).

Multiplying 120001 by its reverse (100021), we get a palindrome (12002620021).

It can be divided in two parts, 1 and 20001, that added together give a palindrome (20002).

The spelling of 120001 in words is "one hundred twenty thousand, one", and thus it is an iban number.