43129045 has 4 divisors (see below), whose sum is σ = 51754860. Its totient is φ = 34503232.

The previous prime is 43129027. The next prime is 43129081. The reversal of 43129045 is 54092134.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12680721 + 30448324 = 3561^2 + 5518^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43129045 is a prime.

It is a super-2 number, since 2×43129045² = 3720229045224050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4312900 + ... + 4312909.

It is an arithmetic number, because the mean of its divisors is an integer number (12938715).

Almost surely, 2^43129045 is an apocalyptic number.

It is an amenable number.

43129045 is a deficient number, since it is larger than the sum of its proper divisors (8625815).

43129045 is an equidigital number, since it uses as much as digits as its factorization.

43129045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8625814.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 43129045 is about 6567.2707420968. The cubic root of 43129045 is about 350.6899180553.

The spelling of 43129045 in words is "forty-three million, one hundred twenty-nine thousand, forty-five".