1427920843 has 2 divisors, whose sum is σ = 1427920844. Its totient is φ = 1427920842.

The previous prime is 1427920787. The next prime is 1427920861. The reversal of 1427920843 is 3480297241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1427920843 - 2⁹ = 1427920331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1427920796 and 1427920805.

It is not a weakly prime, because it can be changed into another prime (1427920643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713960421 + 713960422.

It is an arithmetic number, because the mean of its divisors is an integer number (713960422).

Almost surely, 2^1427920843 is an apocalyptic number.

1427920843 is a deficient number, since it is larger than the sum of its proper divisors (1).

1427920843 is an equidigital number, since it uses as much as digits as its factorization.

1427920843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 1427920843 is about 37787.8398826924. The cubic root of 1427920843 is about 1126.0768863386.

The spelling of 1427920843 in words is "one billion, four hundred twenty-seven million, nine hundred twenty thousand, eight hundred forty-three".