42638358 has 16 divisors (see below), whose sum is σ = 97459200. Its totient is φ = 12182376.

The previous prime is 42638339. The next prime is 42638359. The reversal of 42638358 is 85383624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42638359) 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, 507558 + ... + 507641.

It is an arithmetic number, because the mean of its divisors is an integer number (6091200).

Almost surely, 2^42638358 is an apocalyptic number.

42638358 is an abundant number, since it is smaller than the sum of its proper divisors (54820842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42638358 is a wasteful number, since it uses less digits than its factorization.

42638358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015211.

The product of its digits is 138240, while the sum is 39.

The square root of 42638358 is about 6529.8053569766. The cubic root of 42638358 is about 349.3548878648.

It can be divided in two parts, 4263 and 8358, that added together give a palindrome (12621).

The spelling of 42638358 in words is "forty-two million, six hundred thirty-eight thousand, three hundred fifty-eight".