42478971 has 16 divisors (see below), whose sum is σ = 60217344. Its totient is φ = 26543744.

The previous prime is 42478967. The next prime is 42478981. The reversal of 42478971 is 17987424.

It is a happy number.

42478971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 42478971 - 2² = 42478967 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42478921) 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 15 ways as a sum of consecutive naturals, for example, 11830 + ... + 14996.

It is an arithmetic number, because the mean of its divisors is an integer number (3763584).

Almost surely, 2^42478971 is an apocalyptic number.

42478971 is a deficient number, since it is larger than the sum of its proper divisors (17738373).

42478971 is a wasteful number, since it uses less digits than its factorization.

42478971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3450.

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

The square root of 42478971 is about 6517.5893549686. The cubic root of 42478971 is about 348.9190349753.

The spelling of 42478971 in words is "forty-two million, four hundred seventy-eight thousand, nine hundred seventy-one".