42471893 has 4 divisors (see below), whose sum is σ = 43619820. Its totient is φ = 41323968.

The previous prime is 42471889. The next prime is 42471907. The reversal of 42471893 is 39817424.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29669809 + 12802084 = 5447^2 + 3578^2 .

It is not a de Polignac number, because 42471893 - 2² = 42471889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42471853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 573908 + ... + 573981.

It is an arithmetic number, because the mean of its divisors is an integer number (10904955).

Almost surely, 2^42471893 is an apocalyptic number.

It is an amenable number.

42471893 is a deficient number, since it is larger than the sum of its proper divisors (1147927).

42471893 is a wasteful number, since it uses less digits than its factorization.

42471893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147926.

The product of its digits is 48384, while the sum is 38.

The square root of 42471893 is about 6517.0463401759. The cubic root of 42471893 is about 348.8996545144.

The spelling of 42471893 in words is "forty-two million, four hundred seventy-one thousand, eight hundred ninety-three".