119721 has 8 divisors (see below), whose sum is σ = 182464. Its totient is φ = 68400.

The previous prime is 119701. The next prime is 119723. The reversal of 119721 is 127911.

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

It is not a de Polignac number, because 119721 - 2⁵ = 119689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 5701 = 119721 / (1 + 1 + 9 + 7 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (119723) 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, 2830 + ... + 2871.

It is an arithmetic number, because the mean of its divisors is an integer number (22808).

2¹¹⁹⁷²¹ is an apocalyptic number.

It is an amenable number.

119721 is a deficient number, since it is larger than the sum of its proper divisors (62743).

119721 is an equidigital number, since it uses as much as digits as its factorization.

119721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5711.

The product of its digits is 126, while the sum is 21.

The square root of 119721 is about 346.0072253581. The cubic root of 119721 is about 49.2859855358.

The spelling of 119721 in words is "one hundred nineteen thousand, seven hundred twenty-one".