42003203403 has 8 divisors (see below), whose sum is σ = 64004881408. Its totient is φ = 24001830504.

The previous prime is 42003203387. The next prime is 42003203443. The reversal of 42003203403 is 30430230024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42003203403 - 2⁴ = 42003203387 is a prime.

It is a super-2 number, since 2×42003203403² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 2000152543 = 42003203403 / (4 + 2 + 0 + 0 + 3 + 2 + 0 + 3 + 4 + 0 + 3).

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 42003203403.

It is not an unprimeable number, because it can be changed into a prime (42003203443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000076251 + ... + 1000076292.

It is an arithmetic number, because the mean of its divisors is an integer number (8000610176).

Almost surely, 2^42003203403 is an apocalyptic number.

42003203403 is a deficient number, since it is larger than the sum of its proper divisors (22001678005).

42003203403 is a wasteful number, since it uses less digits than its factorization.

42003203403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000152553.

The product of its (nonzero) digits is 1728, while the sum is 21.

Adding to 42003203403 its reverse (30430230024), we get a palindrome (72433433427).

The spelling of 42003203403 in words is "forty-two billion, three million, two hundred three thousand, four hundred three".