42478719 has 4 divisors (see below), whose sum is σ = 56638296. Its totient is φ = 28319144.

The previous prime is 42478703. The next prime is 42478727. The reversal of 42478719 is 91787424.

It is a happy number.

42478719 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42478719 - 2⁴ = 42478703 is a prime.

It is a super-2 number, since 2×42478719² = 3608883135761922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42478729) 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 3 ways as a sum of consecutive naturals, for example, 7079784 + ... + 7079789.

It is an arithmetic number, because the mean of its divisors is an integer number (14159574).

Almost surely, 2^42478719 is an apocalyptic number.

42478719 is a deficient number, since it is larger than the sum of its proper divisors (14159577).

42478719 is a wasteful number, since it uses less digits than its factorization.

42478719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14159576.

The product of its digits is 112896, while the sum is 42.

The square root of 42478719 is about 6517.5700226388. The cubic root of 42478719 is about 348.9183450044.

The spelling of 42478719 in words is "forty-two million, four hundred seventy-eight thousand, seven hundred nineteen".