43000 has 32 divisors (see below), whose sum is σ = 102960. Its totient is φ = 16800.

The previous prime is 42989. The next prime is 43003. The reversal of 43000 is 34.

43000 = T₁₆ + T₁₇ + ... + T₆₃.

43000 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

43000 is strictly pandigital in base 6.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43003) by changing a digit.

43000 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 979 + ... + 1021.

2⁴³⁰⁰⁰ is an apocalyptic number.

43000 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 43000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51480).

43000 is an abundant number, since it is smaller than the sum of its proper divisors (59960).

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

43000 is a wasteful number, since it uses less digits than its factorization.

43000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 7.

The square root of 43000 is about 207.3644135333. The cubic root of 43000 is about 35.0339806039.

Adding to 43000 its reverse (34), we get a palindrome (43034).

The spelling of 43000 in words is "forty-three thousand", and thus it is an iban number.