42478528 has 56 divisors (see below), whose sum is σ = 89682320. Its totient is φ = 19906560.

The previous prime is 42478523. The next prime is 42478549. The reversal of 42478528 is 82587424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42478523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220000 + ... + 220192.

It is an arithmetic number, because the mean of its divisors is an integer number (1601470).

Almost surely, 2^42478528 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 42478528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44841160).

42478528 is an abundant number, since it is smaller than the sum of its proper divisors (47203792).

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

42478528 is a wasteful number, since it uses less digits than its factorization.

42478528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 395 counting only the distinct ones).

The product of its digits is 143360, while the sum is 40.

The square root of 42478528 is about 6517.5553699221. Note that the first 3 decimals coincide. The cubic root of 42478528 is about 348.9178220484.

The spelling of 42478528 in words is "forty-two million, four hundred seventy-eight thousand, five hundred twenty-eight".