4044120421 has 4 divisors (see below), whose sum is σ = 4411767744. Its totient is φ = 3676473100.

The previous prime is 4044120419. The next prime is 4044120449. The reversal of 4044120421 is 1240214404.

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 4044120421 - 2¹ = 4044120419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4044120392 and 4044120401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4044120401) 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, 183823645 + ... + 183823666.

It is an arithmetic number, because the mean of its divisors is an integer number (1102941936).

Almost surely, 2^4044120421 is an apocalyptic number.

It is an amenable number.

4044120421 is a deficient number, since it is larger than the sum of its proper divisors (367647323).

4044120421 is a wasteful number, since it uses less digits than its factorization.

4044120421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367647322.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 4044120421 is about 63593.3991936270. The cubic root of 4044120421 is about 1593.2161240272.

Adding to 4044120421 its reverse (1240214404), we get a palindrome (5284334825).

The spelling of 4044120421 in words is "four billion, forty-four million, one hundred twenty thousand, four hundred twenty-one".