43128345 has 16 divisors (see below), whose sum is σ = 74313792. Its totient is φ = 21232320.

The previous prime is 43128343. The next prime is 43128353. The reversal of 43128345 is 54382134.

It is not a de Polignac number, because 43128345 - 2¹ = 43128343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43128341) 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, 110391 + ... + 110780.

It is an arithmetic number, because the mean of its divisors is an integer number (4644612).

Almost surely, 2^43128345 is an apocalyptic number.

It is an amenable number.

43128345 is a deficient number, since it is larger than the sum of its proper divisors (31185447).

43128345 is a wasteful number, since it uses less digits than its factorization.

43128345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221192.

The product of its digits is 11520, while the sum is 30.

The square root of 43128345 is about 6567.2174472907. The cubic root of 43128345 is about 350.6880207703.

The spelling of 43128345 in words is "forty-three million, one hundred twenty-eight thousand, three hundred forty-five".