7143040 has 32 divisors (see below), whose sum is σ = 17077860. Its totient is φ = 2856960.

The previous prime is 7143007. The next prime is 7143049. The reversal of 7143040 is 403417.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6110784 + 1032256 = 2472^2 + 1016^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 7142999 and 7143017.

It is not an unprimeable number, because it can be changed into a prime (7143049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4941 + ... + 6220.

Almost surely, 2^7143040 is an apocalyptic number.

It is an amenable number.

7143040 is an abundant number, since it is smaller than the sum of its proper divisors (9934820).

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

7143040 is a wasteful number, since it uses less digits than its factorization.

7143040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11180 (or 11168 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 7143040 is about 2672.6466283443. The cubic root of 7143040 is about 192.5873219392.

Adding to 7143040 its reverse (403417), we get a palindrome (7546457).

The spelling of 7143040 in words is "seven million, one hundred forty-three thousand, forty".