43133240 has 16 divisors (see below), whose sum is σ = 97049880. Its totient is φ = 17253280.

The previous prime is 43133159. The next prime is 43133297. The reversal of 43133240 is 4233134.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539126 + ... + 539205.

Almost surely, 2^43133240 is an apocalyptic number.

43133240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43133240 is an abundant number, since it is smaller than the sum of its proper divisors (53916640).

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

43133240 is a wasteful number, since it uses less digits than its factorization.

43133240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078342 (or 1078338 counting only the distinct ones).

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

The square root of 43133240 is about 6567.5901211936. The cubic root of 43133240 is about 350.7012877832.

Adding to 43133240 its reverse (4233134), we get a palindrome (47366374).

The spelling of 43133240 in words is "forty-three million, one hundred thirty-three thousand, two hundred forty".