1421343743 has 2 divisors, whose sum is σ = 1421343744. Its totient is φ = 1421343742.

The previous prime is 1421343731. The next prime is 1421343751. The reversal of 1421343743 is 3473431241.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1421343743 - 2⁴ = 1421343727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421343643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710671871 + 710671872.

It is an arithmetic number, because the mean of its divisors is an integer number (710671872).

Almost surely, 2^1421343743 is an apocalyptic number.

1421343743 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421343743 is an equidigital number, since it uses as much as digits as its factorization.

1421343743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 32.

The square root of 1421343743 is about 37700.7127651454. The cubic root of 1421343743 is about 1124.3452962319.

Adding to 1421343743 its reverse (3473431241), we get a palindrome (4894774984).

The spelling of 1421343743 in words is "one billion, four hundred twenty-one million, three hundred forty-three thousand, seven hundred forty-three".