42534487 has 4 divisors (see below), whose sum is σ = 42552216. Its totient is φ = 42516760.

The previous prime is 42534463. The next prime is 42534491. The reversal of 42534487 is 78443524.

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

It is a cyclic number.

It is not a de Polignac number, because 42534487 - 2¹¹ = 42532439 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 (42534287) 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 3 ways as a sum of consecutive naturals, for example, 4573 + ... + 10294.

It is an arithmetic number, because the mean of its divisors is an integer number (10638054).

Almost surely, 2^42534487 is an apocalyptic number.

42534487 is a deficient number, since it is larger than the sum of its proper divisors (17729).

42534487 is a wasteful number, since it uses less digits than its factorization.

42534487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17728.

The product of its digits is 107520, while the sum is 37.

The square root of 42534487 is about 6521.8469009936. The cubic root of 42534487 is about 349.0709702059.

The spelling of 42534487 in words is "forty-two million, five hundred thirty-four thousand, four hundred eighty-seven".