42878292 has 24 divisors (see below), whose sum is σ = 102490752. Its totient is φ = 13944000.

The previous prime is 42878287. The next prime is 42878293. The reversal of 42878292 is 29287824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42878293) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 43084 + ... + 44067.

It is an arithmetic number, because the mean of its divisors is an integer number (4270448).

Almost surely, 2^42878292 is an apocalyptic number.

It is an amenable number.

42878292 is an abundant number, since it is smaller than the sum of its proper divisors (59612460).

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

42878292 is a wasteful number, since it uses less digits than its factorization.

42878292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87199 (or 87197 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 42878292 is about 6548.1518003174. The cubic root of 42878292 is about 350.0089575939.

The spelling of 42878292 in words is "forty-two million, eight hundred seventy-eight thousand, two hundred ninety-two".