42878484 has 120 divisors (see below), whose sum is σ = 125139168. Its totient is φ = 12692160.

The previous prime is 42878477. The next prime is 42878513. The reversal of 42878484 is 48487824.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 188779 + ... + 189005.

Almost surely, 2^42878484 is an apocalyptic number.

42878484 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42878484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62569584).

42878484 is an abundant number, since it is smaller than the sum of its proper divisors (82260684).

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

42878484 is a wasteful number, since it uses less digits than its factorization.

42878484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 296 counting only the distinct ones).

The product of its digits is 458752, while the sum is 45.

The square root of 42878484 is about 6548.1664609263. The cubic root of 42878484 is about 350.0094800153.

The spelling of 42878484 in words is "forty-two million, eight hundred seventy-eight thousand, four hundred eighty-four".