1342642040249 has 2 divisors, whose sum is σ = 1342642040250. Its totient is φ = 1342642040248.

The previous prime is 1342642040219. The next prime is 1342642040251. The reversal of 1342642040249 is 9420402462431.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 946548030649 + 396094009600 = 972907^2 + 629360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1342642040249 is a prime.

It is a Sophie Germain prime.

Together with 1342642040251, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1342642040219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671321020124 + 671321020125.

It is an arithmetic number, because the mean of its divisors is an integer number (671321020125).

Almost surely, 2^{1342642040249} is an apocalyptic number.

It is an amenable number.

1342642040249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1342642040249 is an equidigital number, since it uses as much as digits as its factorization.

1342642040249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 1342642040249 in words is "one trillion, three hundred forty-two billion, six hundred forty-two million, forty thousand, two hundred forty-nine".