42104523 has 4 divisors (see below), whose sum is σ = 56139368. Its totient is φ = 28069680.

The previous prime is 42104521. The next prime is 42104533. The reversal of 42104523 is 32540124.

42104523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42104523 - 2¹ = 42104521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42104523.

It is not an unprimeable number, because it can be changed into a prime (42104521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7017418 + ... + 7017423.

It is an arithmetic number, because the mean of its divisors is an integer number (14034842).

Almost surely, 2^42104523 is an apocalyptic number.

42104523 is a deficient number, since it is larger than the sum of its proper divisors (14034845).

42104523 is a wasteful number, since it uses less digits than its factorization.

42104523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14034844.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 42104523 is about 6488.7998119837. The cubic root of 42104523 is about 347.8907785790.

Adding to 42104523 its reverse (32540124), we get a palindrome (74644647).

The spelling of 42104523 in words is "forty-two million, one hundred four thousand, five hundred twenty-three".