42857599 has 2 divisors, whose sum is σ = 42857600. Its totient is φ = 42857598.

The previous prime is 42857569. The next prime is 42857609. The reversal of 42857599 is 99575824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42857599 - 2⁷ = 42857471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42857509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21428799 + 21428800.

It is an arithmetic number, because the mean of its divisors is an integer number (21428800).

Almost surely, 2^42857599 is an apocalyptic number.

42857599 is a deficient number, since it is larger than the sum of its proper divisors (1).

42857599 is an equidigital number, since it uses as much as digits as its factorization.

42857599 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 49.

The square root of 42857599 is about 6546.5715454732. The cubic root of 42857599 is about 349.9526439330.

The spelling of 42857599 in words is "forty-two million, eight hundred fifty-seven thousand, five hundred ninety-nine".