43542857 has 2 divisors, whose sum is σ = 43542858. Its totient is φ = 43542856.

The previous prime is 43542853. The next prime is 43542869. The reversal of 43542857 is 75824534.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43178041 + 364816 = 6571^2 + 604^2 .

It is a cyclic number.

It is not a de Polignac number, because 43542857 - 2² = 43542853 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43542857.

It is not a weakly prime, because it can be changed into another prime (43542853) by changing a digit.

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 as a sum of consecutive naturals, namely, 21771428 + 21771429.

It is an arithmetic number, because the mean of its divisors is an integer number (21771429).

Almost surely, 2^43542857 is an apocalyptic number.

It is an amenable number.

43542857 is a deficient number, since it is larger than the sum of its proper divisors (1).

43542857 is an equidigital number, since it uses as much as digits as its factorization.

43542857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134400, while the sum is 38.

The square root of 43542857 is about 6598.7011600769. The cubic root of 43542857 is about 351.8079428577.

The spelling of 43542857 in words is "forty-three million, five hundred forty-two thousand, eight hundred fifty-seven".