1342564991 has 2 divisors, whose sum is σ = 1342564992. Its totient is φ = 1342564990.

The previous prime is 1342564981. The next prime is 1342565041. The reversal of 1342564991 is 1994652431.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1342564991 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 (1342564931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671282495 + 671282496.

It is an arithmetic number, because the mean of its divisors is an integer number (671282496).

Almost surely, 2^1342564991 is an apocalyptic number.

1342564991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1342564991 is an equidigital number, since it uses as much as digits as its factorization.

1342564991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 44.

The square root of 1342564991 is about 36641.0287928710. The cubic root of 1342564991 is about 1103.1767647075.

The spelling of 1342564991 in words is "one billion, three hundred forty-two million, five hundred sixty-four thousand, nine hundred ninety-one".