542635919923 has 4 divisors (see below), whose sum is σ = 544567008888. Its totient is φ = 540704830960.

The previous prime is 542635919873. The next prime is 542635919929. The reversal of 542635919923 is 329919536245.

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 542635919923 - 2⁹ = 542635919411 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542635919929) 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, 965544061 + ... + 965544622.

It is an arithmetic number, because the mean of its divisors is an integer number (136141752222).

Almost surely, 2^542635919923 is an apocalyptic number.

542635919923 is a deficient number, since it is larger than the sum of its proper divisors (1931088965).

542635919923 is a wasteful number, since it uses less digits than its factorization.

542635919923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931088964.

The product of its digits is 15746400, while the sum is 58.

The spelling of 542635919923 in words is "five hundred forty-two billion, six hundred thirty-five million, nine hundred nineteen thousand, nine hundred twenty-three".