6143240 has 32 divisors (see below), whose sum is σ = 13959000. Its totient is φ = 2433024.

The previous prime is 6143237. The next prime is 6143243. The reversal of 6143240 is 423416.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6143237) and next prime (6143243).

It can be written as a sum of positive squares in 4 ways, for example, as 3602404 + 2540836 = 1898^2 + 1594^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (6143243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3656 + ... + 5064.

Almost surely, 2^6143240 is an apocalyptic number.

It is an amenable number.

6143240 is an abundant number, since it is smaller than the sum of its proper divisors (7815760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6143240 is a wasteful number, since it uses less digits than its factorization.

6143240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529 (or 1525 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 6143240 is about 2478.5560312408. The cubic root of 6143240 is about 183.1467265629.

Adding to 6143240 its reverse (423416), we get a palindrome (6566656).

The spelling of 6143240 in words is "six million, one hundred forty-three thousand, two hundred forty".