119681 has 4 divisors (see below), whose sum is σ = 126000. Its totient is φ = 113364.

The previous prime is 119677. The next prime is 119687. The reversal of 119681 is 186911.

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, and also an emirpimes, since its reverse is a distinct semiprime: 186911 = 311 ⋅601.

It is a cyclic number.

It is not a de Polignac number, because 119681 - 2² = 119677 is a prime.

It is a super-2 number, since 2×119681² = 28647083522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 119681.

It is not an unprimeable number, because it can be changed into a prime (119687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3131 + ... + 3168.

It is an arithmetic number, because the mean of its divisors is an integer number (31500).

2¹¹⁹⁶⁸¹ is an apocalyptic number.

It is an amenable number.

119681 is a deficient number, since it is larger than the sum of its proper divisors (6319).

119681 is an equidigital number, since it uses as much as digits as its factorization.

119681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6318.

The product of its digits is 432, while the sum is 26.

The square root of 119681 is about 345.9494182680. The cubic root of 119681 is about 49.2804959418.

It can be divided in two parts, 11 and 9681, that multiplied together give a triangular number (106491 = T₄₆₁).

The spelling of 119681 in words is "one hundred nineteen thousand, six hundred eighty-one".