4049121 has 4 divisors (see below), whose sum is σ = 5398832. Its totient is φ = 2699412.

The previous prime is 4049107. The next prime is 4049131. The reversal of 4049121 is 1219404.

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 not a de Polignac number, because 4049121 - 2⁶ = 4049057 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

4049121 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4049131) 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, 674851 + ... + 674856.

It is an arithmetic number, because the mean of its divisors is an integer number (1349708).

Almost surely, 2^4049121 is an apocalyptic number.

It is an amenable number.

4049121 is a deficient number, since it is larger than the sum of its proper divisors (1349711).

4049121 is a wasteful number, since it uses less digits than its factorization.

4049121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349710.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 4049121 is about 2012.2427785931. The cubic root of 4049121 is about 159.3872527297.

The spelling of 4049121 in words is "four million, forty-nine thousand, one hundred twenty-one".