42012003 has 16 divisors (see below), whose sum is σ = 62600832. Its totient is φ = 24840000.

The previous prime is 42011993. The next prime is 42012017. The reversal of 42012003 is 30021024.

It is not a de Polignac number, because 42012003 - 2⁶ = 42011939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42012003.

It is not an unprimeable number, because it can be changed into a prime (42012073) 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, 14173 + ... + 16878.

It is an arithmetic number, because the mean of its divisors is an integer number (3912552).

Almost surely, 2^42012003 is an apocalyptic number.

42012003 is a deficient number, since it is larger than the sum of its proper divisors (20588829).

42012003 is a wasteful number, since it uses less digits than its factorization.

42012003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31106.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 42012003 is about 6481.6666838090. Note that the first 4 decimals coincide. The cubic root of 42012003 is about 347.6357746266.

Adding to 42012003 its reverse (30021024), we get a palindrome (72033027).

The spelling of 42012003 in words is "forty-two million, twelve thousand, three".