1421540303 has 2 divisors, whose sum is σ = 1421540304. Its totient is φ = 1421540302.

The previous prime is 1421540297. The next prime is 1421540321. The reversal of 1421540303 is 3030451241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1421540303 - 2⁴ = 1421540287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421540363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710770151 + 710770152.

It is an arithmetic number, because the mean of its divisors is an integer number (710770152).

Almost surely, 2^1421540303 is an apocalyptic number.

1421540303 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421540303 is an equidigital number, since it uses as much as digits as its factorization.

1421540303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1421540303 is about 37703.3195222914. The cubic root of 1421540303 is about 1124.3971230392.

Adding to 1421540303 its reverse (3030451241), we get a palindrome (4451991544).

The spelling of 1421540303 in words is "one billion, four hundred twenty-one million, five hundred forty thousand, three hundred three".