42809103 has 12 divisors (see below), whose sum is σ = 62183160. Its totient is φ = 28378896.

The previous prime is 42809099. The next prime is 42809113. The reversal of 42809103 is 30190824.

It is not a de Polignac number, because 42809103 - 2² = 42809099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42809113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11676 + ... + 14897.

It is an arithmetic number, because the mean of its divisors is an integer number (5181930).

Almost surely, 2^42809103 is an apocalyptic number.

42809103 is a deficient number, since it is larger than the sum of its proper divisors (19374057).

42809103 is a wasteful number, since it uses less digits than its factorization.

42809103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26758 (or 26755 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 42809103 is about 6542.8665736052. The cubic root of 42809103 is about 349.8205964922.

Adding to 42809103 its reverse (30190824), we get a palindrome (72999927).

The spelling of 42809103 in words is "forty-two million, eight hundred nine thousand, one hundred three".