20042155321043 has 8 divisors (see below), whose sum is σ = 20316798043488. Its totient is φ = 19767515102784.

The previous prime is 20042155320973. The next prime is 20042155321079. The reversal of 20042155321043 is 34012355124002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20042155321043 - 2⁸ = 20042155320787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20042155326043) 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 7 ways as a sum of consecutive naturals, for example, 20208521 + ... + 21177077.

It is an arithmetic number, because the mean of its divisors is an integer number (2539599755436).

Almost surely, 2^{20042155321043} is an apocalyptic number.

20042155321043 is a deficient number, since it is larger than the sum of its proper divisors (274642722445).

20042155321043 is an equidigital number, since it uses as much as digits as its factorization.

20042155321043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252093.

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 20042155321043 in words is "twenty trillion, forty-two billion, one hundred fifty-five million, three hundred twenty-one thousand, forty-three".