42382857 has 8 divisors (see below), whose sum is σ = 61647840. Its totient is φ = 25686560.

The previous prime is 42382849. The next prime is 42382877. The reversal of 42382857 is 75828324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42382857 - 2³ = 42382849 is a prime.

It is a super-3 number, since 3×42382857³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (42382877) 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 in 7 ways as a sum of consecutive naturals, for example, 642132 + ... + 642197.

It is an arithmetic number, because the mean of its divisors is an integer number (7705980).

Almost surely, 2^42382857 is an apocalyptic number.

It is an amenable number.

42382857 is a deficient number, since it is larger than the sum of its proper divisors (19264983).

42382857 is a wasteful number, since it uses less digits than its factorization.

42382857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284343.

The product of its digits is 107520, while the sum is 39.

The square root of 42382857 is about 6510.2117477084. The cubic root of 42382857 is about 348.6556785559.

The spelling of 42382857 in words is "forty-two million, three hundred eighty-two thousand, eight hundred fifty-seven".