42009003 has 16 divisors (see below), whose sum is σ = 63292800. Its totient is φ = 27530280.

The previous prime is 42009001. The next prime is 42009029. The reversal of 42009003 is 30090024.

It is not a de Polignac number, because 42009003 - 2¹ = 42009001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42009001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11593 + ... + 14778.

It is an arithmetic number, because the mean of its divisors is an integer number (3955800).

Almost surely, 2^42009003 is an apocalyptic number.

42009003 is a deficient number, since it is larger than the sum of its proper divisors (21283797).

42009003 is a wasteful number, since it uses less digits than its factorization.

42009003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26439 (or 26433 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 42009003 is about 6481.4352577188. The cubic root of 42009003 is about 347.6274997522.

Adding to 42009003 its reverse (30090024), we get a palindrome (72099027).

It can be divided in two parts, 4200 and 9003, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 42009003 in words is "forty-two million, nine thousand, three".