4054012021 has 4 divisors (see below), whose sum is σ = 4054308192. Its totient is φ = 4053715852.

The previous prime is 4054012013. The next prime is 4054012043. The reversal of 4054012021 is 1202104504.

4054012021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 4054012021 - 2³ = 4054012013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4054012021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4054018021) 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, 126505 + ... + 155278.

It is an arithmetic number, because the mean of its divisors is an integer number (1013577048).

Almost surely, 2^4054012021 is an apocalyptic number.

It is an amenable number.

4054012021 is a deficient number, since it is larger than the sum of its proper divisors (296171).

4054012021 is a wasteful number, since it uses less digits than its factorization.

4054012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296170.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 4054012021 is about 63671.1239181468. The cubic root of 4054012021 is about 1594.5140267937.

Adding to 4054012021 its reverse (1202104504), we get a palindrome (5256116525).

The spelling of 4054012021 in words is "four billion, fifty-four million, twelve thousand, twenty-one".