194121 has 6 divisors (see below), whose sum is σ = 280410. Its totient is φ = 129408.

The previous prime is 194119. The next prime is 194141. The reversal of 194121 is 121491.

It can be written as a sum of positive squares in only one way, i.e., 112896 + 81225 = 336^2 + 285^2 .

It is not a de Polignac number, because 194121 - 2¹ = 194119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 194094 and 194103.

It is not an unprimeable number, because it can be changed into a prime (194101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10776 + ... + 10793.

It is an arithmetic number, because the mean of its divisors is an integer number (46735).

2¹⁹⁴¹²¹ is an apocalyptic number.

It is an amenable number.

194121 is a deficient number, since it is larger than the sum of its proper divisors (86289).

194121 is a wasteful number, since it uses less digits than its factorization.

194121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21575 (or 21572 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 194121 is about 440.5916476739. The cubic root of 194121 is about 57.9016366867.

The spelling of 194121 in words is "one hundred ninety-four thousand, one hundred twenty-one".