4054042221 has 4 divisors (see below), whose sum is σ = 5405389632. Its totient is φ = 2702694812.

The previous prime is 4054042219. The next prime is 4054042243. The reversal of 4054042221 is 1222404504.

It is a happy number.

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 4054042221 - 2¹ = 4054042219 is a prime.

It is a super-2 number, since 2×4054042221² = 32870516659301225682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4054042191 and 4054042200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4054042271) 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, 675673701 + ... + 675673706.

It is an arithmetic number, because the mean of its divisors is an integer number (1351347408).

Almost surely, 2^4054042221 is an apocalyptic number.

It is an amenable number.

4054042221 is a deficient number, since it is larger than the sum of its proper divisors (1351347411).

4054042221 is a wasteful number, since it uses less digits than its factorization.

4054042221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351347410.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 4054042221 is about 63671.3610738768. The cubic root of 4054042221 is about 1594.5179861804.

Adding to 4054042221 its reverse (1222404504), we get a palindrome (5276446725).

The spelling of 4054042221 in words is "four billion, fifty-four million, forty-two thousand, two hundred twenty-one".