1285346423 has 2 divisors, whose sum is σ = 1285346424. Its totient is φ = 1285346422.

The previous prime is 1285346401. The next prime is 1285346449. The reversal of 1285346423 is 3246435821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1285346423 - 2²⁸ = 1016910967 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1285316423) 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, 642673211 + 642673212.

It is an arithmetic number, because the mean of its divisors is an integer number (642673212).

Almost surely, 2^1285346423 is an apocalyptic number.

1285346423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285346423 is an equidigital number, since it uses as much as digits as its factorization.

1285346423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 38.

The square root of 1285346423 is about 35851.7283125932. The cubic root of 1285346423 is about 1087.2766576712.

The spelling of 1285346423 in words is "one billion, two hundred eighty-five million, three hundred forty-six thousand, four hundred twenty-three".