42856511 has 8 divisors (see below), whose sum is σ = 43388400. Its totient is φ = 42327360.

The previous prime is 42856501. The next prime is 42856553. The reversal of 42856511 is 11565824.

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-42856511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42856501) 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, 61676 + ... + 62366.

It is an arithmetic number, because the mean of its divisors is an integer number (5423550).

Almost surely, 2^42856511 is an apocalyptic number.

42856511 is a deficient number, since it is larger than the sum of its proper divisors (531889).

42856511 is a wasteful number, since it uses less digits than its factorization.

42856511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369.

The product of its digits is 9600, while the sum is 32.

The square root of 42856511 is about 6546.4884480155. The cubic root of 42856511 is about 349.9496825624.

The spelling of 42856511 in words is "forty-two million, eight hundred fifty-six thousand, five hundred eleven".