42471687 has 4 divisors (see below), whose sum is σ = 56628920. Its totient is φ = 28314456.

The previous prime is 42471679. The next prime is 42471697. The reversal of 42471687 is 78617424.

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

It is not a de Polignac number, because 42471687 - 2³ = 42471679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42471647) 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, 7078612 + ... + 7078617.

It is an arithmetic number, because the mean of its divisors is an integer number (14157230).

Almost surely, 2^42471687 is an apocalyptic number.

42471687 is a deficient number, since it is larger than the sum of its proper divisors (14157233).

42471687 is a wasteful number, since it uses less digits than its factorization.

42471687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14157232.

The product of its digits is 75264, while the sum is 39.

The square root of 42471687 is about 6517.0305354509. The cubic root of 42471687 is about 348.8990904281.

The spelling of 42471687 in words is "forty-two million, four hundred seventy-one thousand, six hundred eighty-seven".