43120939 has 2 divisors, whose sum is σ = 43120940. Its totient is φ = 43120938.

The previous prime is 43120871. The next prime is 43120951. The reversal of 43120939 is 93902134.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43120939 - 2⁷ = 43120811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43120939.

It is not a weakly prime, because it can be changed into another prime (43120439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21560469 + 21560470.

It is an arithmetic number, because the mean of its divisors is an integer number (21560470).

Almost surely, 2^43120939 is an apocalyptic number.

43120939 is a deficient number, since it is larger than the sum of its proper divisors (1).

43120939 is an equidigital number, since it uses as much as digits as its factorization.

43120939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 43120939 is about 6566.6535617467. The cubic root of 43120939 is about 350.6679462373.

The spelling of 43120939 in words is "forty-three million, one hundred twenty thousand, nine hundred thirty-nine".