1421897143 has 2 divisors, whose sum is σ = 1421897144. Its totient is φ = 1421897142.

The previous prime is 1421897137. The next prime is 1421897171. The reversal of 1421897143 is 3417981241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1421897143 - 2⁵ = 1421897111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1421897096 and 1421897105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421897123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710948571 + 710948572.

It is an arithmetic number, because the mean of its divisors is an integer number (710948572).

Almost surely, 2^1421897143 is an apocalyptic number.

1421897143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421897143 is an equidigital number, since it uses as much as digits as its factorization.

1421897143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 1421897143 is about 37708.0514346737. The cubic root of 1421897143 is about 1124.4911985291.

The spelling of 1421897143 in words is "one billion, four hundred twenty-one million, eight hundred ninety-seven thousand, one hundred forty-three".