42878673 has 16 divisors (see below), whose sum is σ = 65574400. Its totient is φ = 27663120.

The previous prime is 42878657. The next prime is 42878677. The reversal of 42878673 is 37687824.

It is a happy number.

It is not a de Polignac number, because 42878673 - 2⁴ = 42878657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42878677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24778 + ... + 26451.

It is an arithmetic number, because the mean of its divisors is an integer number (4098400).

Almost surely, 2^42878673 is an apocalyptic number.

It is an amenable number.

42878673 is a deficient number, since it is larger than the sum of its proper divisors (22695727).

42878673 is a wasteful number, since it uses less digits than its factorization.

42878673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51269 (or 51263 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 42878673 is about 6548.1808924311. The cubic root of 42878673 is about 350.0099942724.

The spelling of 42878673 in words is "forty-two million, eight hundred seventy-eight thousand, six hundred seventy-three".