42707028 has 144 divisors (see below), whose sum is σ = 129058944. Its totient is φ = 10886400.

The previous prime is 42707011. The next prime is 42707047. The reversal of 42707028 is 82070724.

It is a junction number, because it is equal to n+sod(n) for n = 42706986 and 42707004.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 282753 + ... + 282903.

Almost surely, 2^42707028 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 42707028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64529472).

42707028 is an abundant number, since it is smaller than the sum of its proper divisors (86351916).

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

42707028 is a wasteful number, since it uses less digits than its factorization.

42707028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 42707028 is about 6535.0614381198. The cubic root of 42707028 is about 349.5423351453.

The spelling of 42707028 in words is "forty-two million, seven hundred seven thousand, twenty-eight".