1421502443 has 2 divisors, whose sum is σ = 1421502444. Its totient is φ = 1421502442.

The previous prime is 1421502409. The next prime is 1421502457. The reversal of 1421502443 is 3442051241.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421502443 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1421502493) 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, 710751221 + 710751222.

It is an arithmetic number, because the mean of its divisors is an integer number (710751222).

Almost surely, 2^1421502443 is an apocalyptic number.

1421502443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421502443 is an equidigital number, since it uses as much as digits as its factorization.

1421502443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1421502443 is about 37702.8174411409. The cubic root of 1421502443 is about 1124.3871408969.

Adding to 1421502443 its reverse (3442051241), we get a palindrome (4863553684).

The spelling of 1421502443 in words is "one billion, four hundred twenty-one million, five hundred two thousand, four hundred forty-three".