43158940 has 24 divisors (see below), whose sum is σ = 98873712. Its totient is φ = 15694080.

The previous prime is 43158923. The next prime is 43158949. The reversal of 43158940 is 4985134.

It is a junction number, because it is equal to n+sod(n) for n = 43158896 and 43158905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43158949) 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, 97869 + ... + 98308.

It is an arithmetic number, because the mean of its divisors is an integer number (4119738).

Almost surely, 2^43158940 is an apocalyptic number.

It is an amenable number.

43158940 is an abundant number, since it is smaller than the sum of its proper divisors (55714772).

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

43158940 is a wasteful number, since it uses less digits than its factorization.

43158940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196197 (or 196195 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 43158940 is about 6569.5464074775. The cubic root of 43158940 is about 350.7709265244.

The spelling of 43158940 in words is "forty-three million, one hundred fifty-eight thousand, nine hundred forty".