42912003 has 4 divisors (see below), whose sum is σ = 57216008. Its totient is φ = 28608000.

The previous prime is 42911989. The next prime is 42912007. The reversal of 42912003 is 30021924.

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

It is not a de Polignac number, because 42912003 - 2¹³ = 42903811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42912007) 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, 7151998 + ... + 7152003.

It is an arithmetic number, because the mean of its divisors is an integer number (14304002).

Almost surely, 2^42912003 is an apocalyptic number.

42912003 is a deficient number, since it is larger than the sum of its proper divisors (14304005).

42912003 is a wasteful number, since it uses less digits than its factorization.

42912003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14304004.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 42912003 is about 6550.7253796812. The cubic root of 42912003 is about 350.1006594831.

Adding to 42912003 its reverse (30021924), we get a palindrome (72933927).

The spelling of 42912003 in words is "forty-two million, nine hundred twelve thousand, three".