42534418 has 8 divisors (see below), whose sum is σ = 65859840. Its totient is φ = 20581140.

The previous prime is 42534413. The next prime is 42534419. The reversal of 42534418 is 81443524.

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

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a self number, because there is not a number n which added to its sum of digits gives 42534418.

It is not an unprimeable number, because it can be changed into a prime (42534413) 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, 342958 + ... + 343081.

It is an arithmetic number, because the mean of its divisors is an integer number (8232480).

Almost surely, 2^42534418 is an apocalyptic number.

42534418 is a deficient number, since it is larger than the sum of its proper divisors (23325422).

42534418 is a wasteful number, since it uses less digits than its factorization.

42534418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686072.

The product of its digits is 15360, while the sum is 31.

The square root of 42534418 is about 6521.8416110789. The cubic root of 42534418 is about 349.0707814500.

It can be divided in two parts, 425 and 34418, that added together give a palindrome (34843).

The spelling of 42534418 in words is "forty-two million, five hundred thirty-four thousand, four hundred eighteen".