42438506 has 32 divisors (see below), whose sum is σ = 71869248. Its totient is φ = 18627840.

The previous prime is 42438497. The next prime is 42438559. The reversal of 42438506 is 60583424.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106700 + ... + 107096.

It is an arithmetic number, because the mean of its divisors is an integer number (2245914).

Almost surely, 2^42438506 is an apocalyptic number.

42438506 is a deficient number, since it is larger than the sum of its proper divisors (29430742).

42438506 is a wasteful number, since it uses less digits than its factorization.

42438506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 42438506 is about 6514.4843234135. The cubic root of 42438506 is about 348.8082076334.

The spelling of 42438506 in words is "forty-two million, four hundred thirty-eight thousand, five hundred six".