42851081 has 8 divisors (see below), whose sum is σ = 52739904. Its totient is φ = 33904080.

The previous prime is 42851077. The next prime is 42851087. The reversal of 42851081 is 18015824.

42851081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 42851081 - 2² = 42851077 is a prime.

It is a super-2 number, since 2×42851081² = 3672430285737122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42851087) 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 in 7 ways as a sum of consecutive naturals, for example, 235355 + ... + 235536.

It is an arithmetic number, because the mean of its divisors is an integer number (6592488).

Almost surely, 2^42851081 is an apocalyptic number.

It is an amenable number.

42851081 is a deficient number, since it is larger than the sum of its proper divisors (9888823).

42851081 is a wasteful number, since it uses less digits than its factorization.

42851081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470911.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 42851081 is about 6546.0737087204. The cubic root of 42851081 is about 349.9349021787.

The spelling of 42851081 in words is "forty-two million, eight hundred fifty-one thousand, eighty-one".