4194121 has 4 divisors (see below), whose sum is σ = 4440852. Its totient is φ = 3947392.

The previous prime is 4194107. The next prime is 4194131. The reversal of 4194121 is 1214914.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1354896 + 2839225 = 1164^2 + 1685^2 .

It is a cyclic number.

It is not a de Polignac number, because 4194121 - 2¹¹ = 4192073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4194092 and 4194101.

It is not an unprimeable number, because it can be changed into a prime (4194131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123340 + ... + 123373.

It is an arithmetic number, because the mean of its divisors is an integer number (1110213).

Almost surely, 2^4194121 is an apocalyptic number.

It is an amenable number.

4194121 is a deficient number, since it is larger than the sum of its proper divisors (246731).

4194121 is a wasteful number, since it uses less digits than its factorization.

4194121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246730.

The product of its digits is 288, while the sum is 22.

The square root of 4194121 is about 2047.9553217783. The cubic root of 4194121 is about 161.2675489183.

The spelling of 4194121 in words is "four million, one hundred ninety-four thousand, one hundred twenty-one".