1201854971423 has 2 divisors, whose sum is σ = 1201854971424. Its totient is φ = 1201854971422.

The previous prime is 1201854971411. The next prime is 1201854971431. The reversal of 1201854971423 is 3241794581021.

It is a strong prime.

It is an emirp because it is prime and its reverse (3241794581021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201854971423 - 2⁴ = 1201854971407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201854971923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600927485711 + 600927485712.

It is an arithmetic number, because the mean of its divisors is an integer number (600927485712).

Almost surely, 2^{1201854971423} is an apocalyptic number.

1201854971423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201854971423 is an equidigital number, since it uses as much as digits as its factorization.

1201854971423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 1201854971423 in words is "one trillion, two hundred one billion, eight hundred fifty-four million, nine hundred seventy-one thousand, four hundred twenty-three".