42471428 has 12 divisors (see below), whose sum is σ = 76888140. Its totient is φ = 20503392.

The previous prime is 42471413. The next prime is 42471431. The reversal of 42471428 is 82417424.

It can be written as a sum of positive squares in 2 ways, for example, as 26853124 + 15618304 = 5182^2 + 3952^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42471394 and 42471403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182951 + ... + 183182.

It is an arithmetic number, because the mean of its divisors is an integer number (6407345).

Almost surely, 2^42471428 is an apocalyptic number.

It is an amenable number.

42471428 is a deficient number, since it is larger than the sum of its proper divisors (34416712).

42471428 is a wasteful number, since it uses less digits than its factorization.

42471428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366166 (or 366164 counting only the distinct ones).

The product of its digits is 14336, while the sum is 32.

The square root of 42471428 is about 6517.0106644074. The cubic root of 42471428 is about 348.8983812101.

The spelling of 42471428 in words is "forty-two million, four hundred seventy-one thousand, four hundred twenty-eight".