42509103 has 32 divisors (see below), whose sum is σ = 71264256. Its totient is φ = 21938688.

The previous prime is 42509101. The next prime is 42509111. The reversal of 42509103 is 30190524.

It is not a de Polignac number, because 42509103 - 2¹ = 42509101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42509101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11175 + ... + 14487.

It is an arithmetic number, because the mean of its divisors is an integer number (2227008).

Almost surely, 2^42509103 is an apocalyptic number.

42509103 is a deficient number, since it is larger than the sum of its proper divisors (28755153).

42509103 is a wasteful number, since it uses less digits than its factorization.

42509103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3383.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 42509103 is about 6519.9005360511. The cubic root of 42509103 is about 349.0015161277.

Adding to 42509103 its reverse (30190524), we get a palindrome (72699627).

The spelling of 42509103 in words is "forty-two million, five hundred nine thousand, one hundred three".