4056121 has 2 divisors, whose sum is σ = 4056122. Its totient is φ = 4056120.

The previous prime is 4056109. The next prime is 4056131. The reversal of 4056121 is 1216504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3748096 + 308025 = 1936^2 + 555^2 .

It is a cyclic number.

It is not a de Polignac number, because 4056121 - 2⁷ = 4055993 is a prime.

4056121 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (4056131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2028060 + 2028061.

It is an arithmetic number, because the mean of its divisors is an integer number (2028061).

Almost surely, 2^4056121 is an apocalyptic number.

It is an amenable number.

4056121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4056121 is an equidigital number, since it uses as much as digits as its factorization.

4056121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 4056121 is about 2013.9813802516. The cubic root of 4056121 is about 159.4790478337.

The spelling of 4056121 in words is "four million, fifty-six thousand, one hundred twenty-one".