42320503 has 2 divisors, whose sum is σ = 42320504. Its totient is φ = 42320502.

The previous prime is 42320501. The next prime is 42320507. The reversal of 42320503 is 30502324.

42320503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42320503 - 2¹ = 42320501 is a prime.

It is a super-3 number, since 3×42320503³ (a number of 24 digits) contains 333 as substring.

Together with 42320501, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42320501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21160251 + 21160252.

It is an arithmetic number, because the mean of its divisors is an integer number (21160252).

Almost surely, 2^42320503 is an apocalyptic number.

42320503 is a deficient number, since it is larger than the sum of its proper divisors (1).

42320503 is an equidigital number, since it uses as much as digits as its factorization.

42320503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 42320503 is about 6505.4210470960. The cubic root of 42320503 is about 348.4846129582.

Adding to 42320503 its reverse (30502324), we get a palindrome (72822827).

The spelling of 42320503 in words is "forty-two million, three hundred twenty thousand, five hundred three".