1392531642427 has 2 divisors, whose sum is σ = 1392531642428. Its totient is φ = 1392531642426.

The previous prime is 1392531642421. The next prime is 1392531642451. The reversal of 1392531642427 is 7242461352931.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1392531642427 is a prime.

It is not a weakly prime, because it can be changed into another prime (1392531642421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696265821213 + 696265821214.

It is an arithmetic number, because the mean of its divisors is an integer number (696265821214).

Almost surely, 2^{1392531642427} is an apocalyptic number.

1392531642427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1392531642427 is an equidigital number, since it uses as much as digits as its factorization.

1392531642427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 49.

The spelling of 1392531642427 in words is "one trillion, three hundred ninety-two billion, five hundred thirty-one million, six hundred forty-two thousand, four hundred twenty-seven".