4149121 has 2 divisors, whose sum is σ = 4149122. Its totient is φ = 4149120.

The previous prime is 4149107. The next prime is 4149137. The reversal of 4149121 is 1219414.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2446096 + 1703025 = 1564^2 + 1305^2 .

It is a cyclic number.

It is not a de Polignac number, because 4149121 - 2⁹ = 4148609 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4149092 and 4149101.

It is not a weakly prime, because it can be changed into another prime (4149151) 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, 2074560 + 2074561.

It is an arithmetic number, because the mean of its divisors is an integer number (2074561).

Almost surely, 2^4149121 is an apocalyptic number.

It is an amenable number.

4149121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4149121 is an equidigital number, since it uses as much as digits as its factorization.

4149121 is an odious number, because the sum of its binary digits is odd.

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

The square root of 4149121 is about 2036.9391252563. The cubic root of 4149121 is about 160.6887109169.

The spelling of 4149121 in words is "four million, one hundred forty-nine thousand, one hundred twenty-one".