1542431656427 has 2 divisors, whose sum is σ = 1542431656428. Its totient is φ = 1542431656426.

The previous prime is 1542431656411. The next prime is 1542431656433. The reversal of 1542431656427 is 7246561342451.

It is a strong prime.

It is an emirp because it is prime and its reverse (7246561342451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1542431656427 - 2⁴ = 1542431656411 is a prime.

It is not a weakly prime, because it can be changed into another prime (1542431656457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 771215828213 + 771215828214.

It is an arithmetic number, because the mean of its divisors is an integer number (771215828214).

Almost surely, 2^{1542431656427} is an apocalyptic number.

1542431656427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1542431656427 is an equidigital number, since it uses as much as digits as its factorization.

1542431656427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4838400, while the sum is 50.

Adding to 1542431656427 its reverse (7246561342451), we get a palindrome (8788992998878).

The spelling of 1542431656427 in words is "one trillion, five hundred forty-two billion, four hundred thirty-one million, six hundred fifty-six thousand, four hundred twenty-seven".