42534638 has 8 divisors (see below), whose sum is σ = 64155000. Its totient is φ = 21149640.

The previous prime is 42534637. The next prime is 42534641. The reversal of 42534638 is 83643524.

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

It is a Curzon number.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 42534598 and 42534607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42534637) 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, 58388 + ... + 59111.

It is an arithmetic number, because the mean of its divisors is an integer number (8019375).

Almost surely, 2^42534638 is an apocalyptic number.

42534638 is a deficient number, since it is larger than the sum of its proper divisors (21620362).

42534638 is a wasteful number, since it uses less digits than its factorization.

42534638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117682.

The product of its digits is 69120, while the sum is 35.

The square root of 42534638 is about 6521.8584774587. The cubic root of 42534638 is about 349.0713832798.

The spelling of 42534638 in words is "forty-two million, five hundred thirty-four thousand, six hundred thirty-eight".