43120057 has 2 divisors, whose sum is σ = 43120058. Its totient is φ = 43120056.

The previous prime is 43120027. The next prime is 43120067. The reversal of 43120057 is 75002134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37258816 + 5861241 = 6104^2 + 2421^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43120057 is a prime.

It is not a weakly prime, because it can be changed into another prime (43120027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21560028 + 21560029.

It is an arithmetic number, because the mean of its divisors is an integer number (21560029).

Almost surely, 2^43120057 is an apocalyptic number.

It is an amenable number.

43120057 is a deficient number, since it is larger than the sum of its proper divisors (1).

43120057 is an equidigital number, since it uses as much as digits as its factorization.

43120057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 43120057 is about 6566.5864039088. The cubic root of 43120057 is about 350.6655553553.

The spelling of 43120057 in words is "forty-three million, one hundred twenty thousand, fifty-seven".