1285422043 has 2 divisors, whose sum is σ = 1285422044. Its totient is φ = 1285422042.

The previous prime is 1285422041. The next prime is 1285422107. The reversal of 1285422043 is 3402245821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1285422043 - 2¹ = 1285422041 is a prime.

Together with 1285422041, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1285421996 and 1285422014.

It is not a weakly prime, because it can be changed into another prime (1285422041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642711021 + 642711022.

It is an arithmetic number, because the mean of its divisors is an integer number (642711022).

Almost surely, 2^1285422043 is an apocalyptic number.

1285422043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285422043 is an equidigital number, since it uses as much as digits as its factorization.

1285422043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 1285422043 is about 35852.7829184849. The cubic root of 1285422043 is about 1087.2979796139.

Adding to 1285422043 its reverse (3402245821), we get a palindrome (4687667864).

The spelling of 1285422043 in words is "one billion, two hundred eighty-five million, four hundred twenty-two thousand, forty-three".