42956028 has 96 divisors (see below), whose sum is σ = 116424000. Its totient is φ = 13685760.

The previous prime is 42956021. The next prime is 42956029. The reversal of 42956028 is 82065924.

It is a happy number.

42956028 is a `hidden beast` number, since 42 + 9 + 5 + 602 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 42955983 and 42956001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42956021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 394038 + ... + 394146.

It is an arithmetic number, because the mean of its divisors is an integer number (1212750).

Almost surely, 2^42956028 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 42956028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58212000).

42956028 is an abundant number, since it is smaller than the sum of its proper divisors (73467972).

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

42956028 is a wasteful number, since it uses less digits than its factorization.

42956028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 42956028 is about 6554.0848331403. The cubic root of 42956028 is about 350.2203456041.

The spelling of 42956028 in words is "forty-two million, nine hundred fifty-six thousand, twenty-eight".