42471939 has 8 divisors (see below), whose sum is σ = 56873232. Its totient is φ = 28192640.

The previous prime is 42471937. The next prime is 42471971. The reversal of 42471939 is 93917424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42471939 - 2¹ = 42471937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42471897 and 42471906.

It is not an unprimeable number, because it can be changed into a prime (42471931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29682 + ... + 31079.

It is an arithmetic number, because the mean of its divisors is an integer number (7109154).

Almost surely, 2^42471939 is an apocalyptic number.

42471939 is a deficient number, since it is larger than the sum of its proper divisors (14401293).

42471939 is a wasteful number, since it uses less digits than its factorization.

42471939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60997.

The product of its digits is 54432, while the sum is 39.

The square root of 42471939 is about 6517.0498693811. The cubic root of 42471939 is about 348.8997804752.

The spelling of 42471939 in words is "forty-two million, four hundred seventy-one thousand, nine hundred thirty-nine".