42378873 has 24 divisors (see below), whose sum is σ = 60350400. Its totient is φ = 26446176.

The previous prime is 42378851. The next prime is 42378877. The reversal of 42378873 is 37887324.

42378873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42378873 - 2¹⁰ = 42377849 is a prime.

It is a super-3 number, since 3×42378873³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (42378877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117868 + ... + 118226.

It is an arithmetic number, because the mean of its divisors is an integer number (2514600).

Almost surely, 2^42378873 is an apocalyptic number.

It is an amenable number.

42378873 is a deficient number, since it is larger than the sum of its proper divisors (17971527).

42378873 is a wasteful number, since it uses less digits than its factorization.

42378873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 490 counting only the distinct ones).

The product of its digits is 225792, while the sum is 42.

The square root of 42378873 is about 6509.9057596865. The cubic root of 42378873 is about 348.6447536376.

The spelling of 42378873 in words is "forty-two million, three hundred seventy-eight thousand, eight hundred seventy-three".