42657012 has 72 divisors (see below), whose sum is σ = 116678016. Its totient is φ = 13089024.

The previous prime is 42656987. The next prime is 42657031. The reversal of 42657012 is 21075624.

42657012 is a `hidden beast` number, since 4 + 2 + 657 + 0 + 1 + 2 = 666.

42657012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 28023 + ... + 29505.

It is an arithmetic number, because the mean of its divisors is an integer number (1620528).

Almost surely, 2^42657012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42657012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58339008).

42657012 is an abundant number, since it is smaller than the sum of its proper divisors (74021004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42657012 is a wasteful number, since it uses less digits than its factorization.

42657012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557 (or 1552 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 42657012 is about 6531.2335741420. The cubic root of 42657012 is about 349.4058272557.

The spelling of 42657012 in words is "forty-two million, six hundred fifty-seven thousand, twelve".