6144248421 has 6 divisors (see below), whose sum is σ = 8875025510. Its totient is φ = 4096165608.

The previous prime is 6144248419. The next prime is 6144248431. The reversal of 6144248421 is 1248424416.

It can be written as a sum of positive squares in only one way, i.e., 6011676225 + 132572196 = 77535^2 + 11514^2 .

It is not a de Polignac number, because 6144248421 - 2¹ = 6144248419 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 (6144248401) 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, 341347126 + ... + 341347143.

Almost surely, 2^6144248421 is an apocalyptic number.

It is an amenable number.

6144248421 is a deficient number, since it is larger than the sum of its proper divisors (2730777089).

6144248421 is a wasteful number, since it uses less digits than its factorization.

6144248421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682694275 (or 682694272 counting only the distinct ones).

The product of its digits is 49152, while the sum is 36.

The square root of 6144248421 is about 78385.2564006778. The cubic root of 6144248421 is about 1831.5674727402.

The spelling of 6144248421 in words is "six billion, one hundred forty-four million, two hundred forty-eight thousand, four hundred twenty-one".