4192121 has 2 divisors, whose sum is σ = 4192122. Its totient is φ = 4192120.

The previous prime is 4192093. The next prime is 4192129. The reversal of 4192121 is 1212914.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3534400 + 657721 = 1880^2 + 811^2 .

It is a cyclic number.

It is not a de Polignac number, because 4192121 - 2¹⁰ = 4191097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4192093 and 4192102.

It is not a weakly prime, because it can be changed into another prime (4192129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2096060 + 2096061.

It is an arithmetic number, because the mean of its divisors is an integer number (2096061).

Almost surely, 2^4192121 is an apocalyptic number.

It is an amenable number.

4192121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4192121 is an equidigital number, since it uses as much as digits as its factorization.

4192121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 20.

The square root of 4192121 is about 2047.4669716506. The cubic root of 4192121 is about 161.2419109377.

The spelling of 4192121 in words is "four million, one hundred ninety-two thousand, one hundred twenty-one".