1920042459443 has 4 divisors (see below), whose sum is σ = 1923205627200. Its totient is φ = 1916879291688.

The previous prime is 1920042459421. The next prime is 1920042459487. The reversal of 1920042459443 is 3449542400291.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1920042459443 - 2¹⁰ = 1920042458419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1920042459743) 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 in 3 ways as a sum of consecutive naturals, for example, 1581582968 + ... + 1581584181.

It is an arithmetic number, because the mean of its divisors is an integer number (480801406800).

Almost surely, 2^{1920042459443} is an apocalyptic number.

1920042459443 is a deficient number, since it is larger than the sum of its proper divisors (3163167757).

1920042459443 is an equidigital number, since it uses as much as digits as its factorization.

1920042459443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3163167756.

The product of its (nonzero) digits is 1244160, while the sum is 47.

The spelling of 1920042459443 in words is "one trillion, nine hundred twenty billion, forty-two million, four hundred fifty-nine thousand, four hundred forty-three".