43133420 has 96 divisors (see below), whose sum is σ = 110315520. Its totient is φ = 13962240.

The previous prime is 43133417. The next prime is 43133443. The reversal of 43133420 is 2433134.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 43133392 and 43133401.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70757 + ... + 71363.

It is an arithmetic number, because the mean of its divisors is an integer number (1149120).

Almost surely, 2^43133420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43133420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55157760).

43133420 is an abundant number, since it is smaller than the sum of its proper divisors (67182100).

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

43133420 is a wasteful number, since it uses less digits than its factorization.

43133420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663 (or 661 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 43133420 is about 6567.6038248360. The cubic root of 43133420 is about 350.7017756215.

Adding to 43133420 its reverse (2433134), we get a palindrome (45566554).

The spelling of 43133420 in words is "forty-three million, one hundred thirty-three thousand, four hundred twenty".