1342642040251 has 2 divisors, whose sum is σ = 1342642040252. Its totient is φ = 1342642040250.

The previous prime is 1342642040249. The next prime is 1342642040297. The reversal of 1342642040251 is 1520402462431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1342642040251 - 2¹ = 1342642040249 is a prime.

Together with 1342642040249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1342642040351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671321020125 + 671321020126.

It is an arithmetic number, because the mean of its divisors is an integer number (671321020126).

Almost surely, 2^{1342642040251} is an apocalyptic number.

1342642040251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1342642040251 is an equidigital number, since it uses as much as digits as its factorization.

1342642040251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 34.

The spelling of 1342642040251 in words is "one trillion, three hundred forty-two billion, six hundred forty-two million, forty thousand, two hundred fifty-one".