42975577 has 2 divisors, whose sum is σ = 42975578. Its totient is φ = 42975576.

The previous prime is 42975551. The next prime is 42975589. The reversal of 42975577 is 77557924.

42975577 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36132121 + 6843456 = 6011^2 + 2616^2 .

It is a cyclic number.

It is not a de Polignac number, because 42975577 - 2¹¹ = 42973529 is a prime.

It is not a weakly prime, because it can be changed into another prime (42975547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21487788 + 21487789.

It is an arithmetic number, because the mean of its divisors is an integer number (21487789).

Almost surely, 2^42975577 is an apocalyptic number.

It is an amenable number.

42975577 is a deficient number, since it is larger than the sum of its proper divisors (1).

42975577 is an equidigital number, since it uses as much as digits as its factorization.

42975577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 617400, while the sum is 46.

The square root of 42975577 is about 6555.5760235085. The cubic root of 42975577 is about 350.2734651896.

The spelling of 42975577 in words is "forty-two million, nine hundred seventy-five thousand, five hundred seventy-seven".