42403003 has 4 divisors (see below), whose sum is σ = 44634760. Its totient is φ = 40171248.

The previous prime is 42402967. The next prime is 42403019. The reversal of 42403003 is 30030424.

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 42403003 - 2²¹ = 40305851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42403033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1115850 + ... + 1115887.

It is an arithmetic number, because the mean of its divisors is an integer number (11158690).

Almost surely, 2^42403003 is an apocalyptic number.

42403003 is a deficient number, since it is larger than the sum of its proper divisors (2231757).

42403003 is a wasteful number, since it uses less digits than its factorization.

42403003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231756.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 42403003 is about 6511.7588253866. The cubic root of 42403003 is about 348.7109124026.

Adding to 42403003 its reverse (30030424), we get a palindrome (72433427).

The spelling of 42403003 in words is "forty-two million, four hundred three thousand, three".