43143240 has 64 divisors (see below), whose sum is σ = 147922560. Its totient is φ = 9861120.

The previous prime is 43143211. The next prime is 43143241. The reversal of 43143240 is 4234134.

It is a super-2 number, since 2×43143240² = 3722678315395200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (43143241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24841 + ... + 26520.

It is an arithmetic number, because the mean of its divisors is an integer number (2311290).

Almost surely, 2^43143240 is an apocalyptic number.

43143240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43143240 is an abundant number, since it is smaller than the sum of its proper divisors (104779320).

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

43143240 is a wasteful number, since it uses less digits than its factorization.

43143240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51382 (or 51378 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 43143240 is about 6568.3513913310. The cubic root of 43143240 is about 350.7283878564.

Adding to 43143240 its reverse (4234134), we get a palindrome (47377374).

The spelling of 43143240 in words is "forty-three million, one hundred forty-three thousand, two hundred forty".