13143140 has 24 divisors (see below), whose sum is σ = 28348152. Its totient is φ = 5114880.

The previous prime is 13143089. The next prime is 13143149. The reversal of 13143140 is 4134131.

It can be written as a sum of positive squares in 4 ways, for example, as 2748964 + 10394176 = 1658^2 + 3224^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13143149) 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, 8141 + ... + 9620.

It is an arithmetic number, because the mean of its divisors is an integer number (1181173).

Almost surely, 2^13143140 is an apocalyptic number.

13143140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13143140 is an abundant number, since it is smaller than the sum of its proper divisors (15205012).

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

13143140 is a wasteful number, since it uses less digits than its factorization.

13143140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17807 (or 17805 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 13143140 is about 3625.3468799551. The cubic root of 13143140 is about 235.9933206958.

Adding to 13143140 its reverse (4134131), we get a palindrome (17277271).

Subtracting from 13143140 its reverse (4134131), we obtain a palindrome (9009009).

The spelling of 13143140 in words is "thirteen million, one hundred forty-three thousand, one hundred forty".