6144021 has 24 divisors (see below), whose sum is σ = 10122840. Its totient is φ = 3557376.

The previous prime is 6144007. The next prime is 6144029. The reversal of 6144021 is 1204416.

It can be written as a sum of positive squares in 4 ways, for example, as 1920996 + 4223025 = 1386^2 + 2055^2 .

It is not a de Polignac number, because 6144021 - 2⁶ = 6143957 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6143985 and 6144003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6144029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 445 + ... + 3533.

It is an arithmetic number, because the mean of its divisors is an integer number (421785).

Almost surely, 2^6144021 is an apocalyptic number.

It is an amenable number.

6144021 is a deficient number, since it is larger than the sum of its proper divisors (3978819).

6144021 is a wasteful number, since it uses less digits than its factorization.

6144021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125 (or 3122 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 6144021 is about 2478.7135776447. The cubic root of 6144021 is about 183.1544874802.

Adding to 6144021 its reverse (1204416), we get a palindrome (7348437).

The spelling of 6144021 in words is "six million, one hundred forty-four thousand, twenty-one".