1342856491 has 2 divisors, whose sum is σ = 1342856492. Its totient is φ = 1342856490.

The previous prime is 1342856453. The next prime is 1342856531. The reversal of 1342856491 is 1946582431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1342856491 - 2⁷ = 1342856363 is a prime.

It is not a weakly prime, because it can be changed into another prime (1342856191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671428245 + 671428246.

It is an arithmetic number, because the mean of its divisors is an integer number (671428246).

Almost surely, 2^1342856491 is an apocalyptic number.

1342856491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1342856491 is an equidigital number, since it uses as much as digits as its factorization.

1342856491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 43.

The square root of 1342856491 is about 36645.0063583021. The cubic root of 1342856491 is about 1103.2566001365.

The spelling of 1342856491 in words is "one billion, three hundred forty-two million, eight hundred fifty-six thousand, four hundred ninety-one".