42028470 has 160 divisors (see below), whose sum is σ = 127020960. Its totient is φ = 9884160.

The previous prime is 42028463. The next prime is 42028499. The reversal of 42028470 is 7482024.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 472186 + ... + 472274.

It is an arithmetic number, because the mean of its divisors is an integer number (793881).

Almost surely, 2^42028470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42028470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63510480).

42028470 is an abundant number, since it is smaller than the sum of its proper divisors (84992490).

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

42028470 is a wasteful number, since it uses less digits than its factorization.

42028470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 42028470 is about 6482.9368344910. The cubic root of 42028470 is about 347.6811883983.

The spelling of 42028470 in words is "forty-two million, twenty-eight thousand, four hundred seventy".