1421355503 has 2 divisors, whose sum is σ = 1421355504. Its totient is φ = 1421355502.

The previous prime is 1421355491. The next prime is 1421355539. The reversal of 1421355503 is 3055531241.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421355503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421352503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710677751 + 710677752.

It is an arithmetic number, because the mean of its divisors is an integer number (710677752).

Almost surely, 2^1421355503 is an apocalyptic number.

1421355503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421355503 is an equidigital number, since it uses as much as digits as its factorization.

1421355503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 1421355503 is about 37700.8687300439. The cubic root of 1421355503 is about 1124.3483971155.

Adding to 1421355503 its reverse (3055531241), we get a palindrome (4476886744).

The spelling of 1421355503 in words is "one billion, four hundred twenty-one million, three hundred fifty-five thousand, five hundred three".