503042387 has 2 divisors, whose sum is σ = 503042388. Its totient is φ = 503042386.

The previous prime is 503042339. The next prime is 503042389. The reversal of 503042387 is 783240305.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-503042387 is a prime.

Together with 503042389, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (503042389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251521193 + 251521194.

It is an arithmetic number, because the mean of its divisors is an integer number (251521194).

Almost surely, 2^503042387 is an apocalyptic number.

503042387 is a deficient number, since it is larger than the sum of its proper divisors (1).

503042387 is an equidigital number, since it uses as much as digits as its factorization.

503042387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 503042387 is about 22428.6064435577. The cubic root of 503042387 is about 795.3071012691.

The spelling of 503042387 in words is "five hundred three million, forty-two thousand, three hundred eighty-seven".