43145320 has 64 divisors (see below), whose sum is σ = 104431680. Its totient is φ = 15983616.

The previous prime is 43145317. The next prime is 43145353. The reversal of 43145320 is 2354134.

It is a junction number, because it is equal to n+sod(n) for n = 43145291 and 43145300.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45087 + ... + 46033.

It is an arithmetic number, because the mean of its divisors is an integer number (1631745).

Almost surely, 2^43145320 is an apocalyptic number.

43145320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43145320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52215840).

43145320 is an abundant number, since it is smaller than the sum of its proper divisors (61286360).

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

43145320 is a wasteful number, since it uses less digits than its factorization.

43145320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 43145320 is about 6568.5097244352. The cubic root of 43145320 is about 350.7340241456.

Adding to 43145320 its reverse (2354134), we get a palindrome (45499454).

The spelling of 43145320 in words is "forty-three million, one hundred forty-five thousand, three hundred twenty".