4147121 has 4 divisors (see below), whose sum is σ = 4524144. Its totient is φ = 3770100.

The previous prime is 4147103. The next prime is 4147147. The reversal of 4147121 is 1217414.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4147121 - 2¹⁸ = 3884977 is a prime.

It is a super-2 number, since 2×4147121² = 34397225177282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4147093 and 4147102.

It is not an unprimeable number, because it can be changed into a prime (4147151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188495 + ... + 188516.

It is an arithmetic number, because the mean of its divisors is an integer number (1131036).

Almost surely, 2^4147121 is an apocalyptic number.

It is an amenable number.

4147121 is a deficient number, since it is larger than the sum of its proper divisors (377023).

4147121 is a wasteful number, since it uses less digits than its factorization.

4147121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377022.

The product of its digits is 224, while the sum is 20.

The square root of 4147121 is about 2036.4481333930. The cubic root of 4147121 is about 160.6628878511.

The spelling of 4147121 in words is "four million, one hundred forty-seven thousand, one hundred twenty-one".