4144542021 has 6 divisors (see below), whose sum is σ = 5986560710. Its totient is φ = 2763028008.

The previous prime is 4144541927. The next prime is 4144542037. The reversal of 4144542021 is 1202454414.

4144542021 is a `hidden beast` number, since 4 + 1 + 4 + 454 + 202 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4126649121 + 17892900 = 64239^2 + 4230^2 .

It is not a de Polignac number, because 4144542021 - 2¹⁵ = 4144509253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4144542091) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 230252326 + ... + 230252343.

Almost surely, 2^4144542021 is an apocalyptic number.

It is an amenable number.

4144542021 is a deficient number, since it is larger than the sum of its proper divisors (1842018689).

4144542021 is a wasteful number, since it uses less digits than its factorization.

4144542021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460504675 (or 460504672 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 4144542021 is about 64378.1175633460. The cubic root of 4144542021 is about 1606.2957702068.

Adding to 4144542021 its reverse (1202454414), we get a palindrome (5346996435).

The spelling of 4144542021 in words is "four billion, one hundred forty-four million, five hundred forty-two thousand, twenty-one".