42059857 has 8 divisors (see below), whose sum is σ = 48234816. Its totient is φ = 35926512.

The previous prime is 42059851. The next prime is 42059867. The reversal of 42059857 is 75895024.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42059857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42059851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8203 + ... + 12304.

It is an arithmetic number, because the mean of its divisors is an integer number (6029352).

Almost surely, 2^42059857 is an apocalyptic number.

42059857 is the 4102-nd heptagonal number.

It is an amenable number.

42059857 is a deficient number, since it is larger than the sum of its proper divisors (6174959).

42059857 is a wasteful number, since it uses less digits than its factorization.

42059857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20807.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 42059857 is about 6485.3571220096. The cubic root of 42059857 is about 347.7677166814.

The spelling of 42059857 in words is "forty-two million, fifty-nine thousand, eight hundred fifty-seven".