6144421 has 2 divisors, whose sum is σ = 6144422. Its totient is φ = 6144420.

The previous prime is 6144409. The next prime is 6144461. The reversal of 6144421 is 1244416.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3629025 + 2515396 = 1905^2 + 1586^2 .

It is a cyclic number.

It is not a de Polignac number, because 6144421 - 2⁵ = 6144389 is a prime.

It is a Chen prime.

6144421 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6144392 and 6144401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6144461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3072210 + 3072211.

It is an arithmetic number, because the mean of its divisors is an integer number (3072211).

Almost surely, 2^6144421 is an apocalyptic number.

It is an amenable number.

6144421 is a deficient number, since it is larger than the sum of its proper divisors (1).

6144421 is an equidigital number, since it uses as much as digits as its factorization.

6144421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 22.

The square root of 6144421 is about 2478.7942633466. The cubic root of 6144421 is about 183.1584620871.

Adding to 6144421 its reverse (1244416), we get a palindrome (7388837).

The spelling of 6144421 in words is "six million, one hundred forty-four thousand, four hundred twenty-one".