1421085143 has 2 divisors, whose sum is σ = 1421085144. Its totient is φ = 1421085142.

The previous prime is 1421085137. The next prime is 1421085181. The reversal of 1421085143 is 3415801241.

It is a weak prime.

It is an emirp because it is prime and its reverse (3415801241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1421085143 - 2²⁰ = 1420036567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421085103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710542571 + 710542572.

It is an arithmetic number, because the mean of its divisors is an integer number (710542572).

Almost surely, 2^1421085143 is an apocalyptic number.

1421085143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421085143 is an equidigital number, since it uses as much as digits as its factorization.

1421085143 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 29.

The square root of 1421085143 is about 37697.2829657523. The cubic root of 1421085143 is about 1124.2771041121.

Adding to 1421085143 its reverse (3415801241), we get a palindrome (4836886384).

The spelling of 1421085143 in words is "one billion, four hundred twenty-one million, eighty-five thousand, one hundred forty-three".