42087471 has 8 divisors (see below), whose sum is σ = 56326320. Its totient is φ = 27953472.

The previous prime is 42087469. The next prime is 42087481. The reversal of 42087471 is 17478024.

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

It is not a de Polignac number, because 42087471 - 2¹ = 42087469 is a prime.

It is a super-3 number, since 3×42087471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42087431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25270 + ... + 26883.

It is an arithmetic number, because the mean of its divisors is an integer number (7040790).

Almost surely, 2^42087471 is an apocalyptic number.

42087471 is a deficient number, since it is larger than the sum of its proper divisors (14238849).

42087471 is a wasteful number, since it uses less digits than its factorization.

42087471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52425.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 42087471 is about 6487.4857225276. The cubic root of 42087471 is about 347.8438078963.

The spelling of 42087471 in words is "forty-two million, eighty-seven thousand, four hundred seventy-one".