1342185391 has 2 divisors, whose sum is σ = 1342185392. Its totient is φ = 1342185390.

The previous prime is 1342185329. The next prime is 1342185407. The reversal of 1342185391 is 1935812431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1342185391 - 2¹¹ = 1342183343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1342185391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1342185311) 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, 671092695 + 671092696.

It is an arithmetic number, because the mean of its divisors is an integer number (671092696).

Almost surely, 2^1342185391 is an apocalyptic number.

1342185391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1342185391 is an equidigital number, since it uses as much as digits as its factorization.

1342185391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 37.

The square root of 1342185391 is about 36635.8484411102. The cubic root of 1342185391 is about 1103.0727833047.

The spelling of 1342185391 in words is "one billion, three hundred forty-two million, one hundred eighty-five thousand, three hundred ninety-one".