42109504 has 28 divisors (see below), whose sum is σ = 87197184. Its totient is φ = 20138624.

The previous prime is 42109451. The next prime is 42109511. The reversal of 42109504 is 40590124.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12832 + ... + 15775.

Almost surely, 2^42109504 is an apocalyptic number.

It is an amenable number.

42109504 is an abundant number, since it is smaller than the sum of its proper divisors (45087680).

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

42109504 is a wasteful number, since it uses less digits than its factorization.

42109504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28642 (or 28632 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 42109504 is about 6489.1836158334. The cubic root of 42109504 is about 347.9044966273.

Adding to 42109504 its reverse (40590124), we get a palindrome (82699628).

The spelling of 42109504 in words is "forty-two million, one hundred nine thousand, five hundred four".