43020099 has 16 divisors (see below), whose sum is σ = 64333440. Its totient is φ = 28410120.

The previous prime is 43020077. The next prime is 43020127. The reversal of 43020099 is 99002034.

It is not a de Polignac number, because 43020099 - 2¹¹ = 43018051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (43020049) 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, 4557 + ... + 10334.

It is an arithmetic number, because the mean of its divisors is an integer number (4020840).

Almost surely, 2^43020099 is an apocalyptic number.

43020099 is a deficient number, since it is larger than the sum of its proper divisors (21313341).

43020099 is a wasteful number, since it uses less digits than its factorization.

43020099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15007 (or 15001 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 43020099 is about 6558.9708796426. The cubic root of 43020099 is about 350.3943826506.

The spelling of 43020099 in words is "forty-three million, twenty thousand, ninety-nine".