42124003 has 2 divisors, whose sum is σ = 42124004. Its totient is φ = 42124002.

The previous prime is 42124001. The next prime is 42124057. The reversal of 42124003 is 30042124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42124003 - 2¹ = 42124001 is a prime.

Together with 42124001, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42124001) 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 as a sum of consecutive naturals, namely, 21062001 + 21062002.

It is an arithmetic number, because the mean of its divisors is an integer number (21062002).

Almost surely, 2^42124003 is an apocalyptic number.

42124003 is a deficient number, since it is larger than the sum of its proper divisors (1).

42124003 is an equidigital number, since it uses as much as digits as its factorization.

42124003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 42124003 is about 6490.3006864089. The cubic root of 42124003 is about 347.9444218064.

Adding to 42124003 its reverse (30042124), we get a palindrome (72166127).

The spelling of 42124003 in words is "forty-two million, one hundred twenty-four thousand, three".