42345503 has 4 divisors (see below), whose sum is σ = 42411600. Its totient is φ = 42279408.

The previous prime is 42345491. The next prime is 42345587. The reversal of 42345503 is 30554324.

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

It is a cyclic number.

It is not a de Polignac number, because 42345503 - 2¹⁰ = 42344479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42345203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32078 + ... + 33371.

It is an arithmetic number, because the mean of its divisors is an integer number (10602900).

Almost surely, 2^42345503 is an apocalyptic number.

42345503 is a deficient number, since it is larger than the sum of its proper divisors (66097).

42345503 is an equidigital number, since it uses as much as digits as its factorization.

42345503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66096.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 42345503 is about 6507.3422378111. The cubic root of 42345503 is about 348.5532195812.

Adding to 42345503 its reverse (30554324), we get a palindrome (72899827).

The spelling of 42345503 in words is "forty-two million, three hundred forty-five thousand, five hundred three".