20403727042 has 8 divisors (see below), whose sum is σ = 30612470796. Its totient is φ = 10199570112.

The previous prime is 20403727037. The next prime is 20403727061. The reversal of 20403727042 is 24072730402.

It can be written as a sum of positive squares in 2 ways, for example, as 16353550161 + 4050176881 = 127881^2 + 63641^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 20403726995 and 20403727013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1135563 + ... + 1153390.

Almost surely, 2^20403727042 is an apocalyptic number.

20403727042 is a deficient number, since it is larger than the sum of its proper divisors (10208743754).

20403727042 is a wasteful number, since it uses less digits than its factorization.

20403727042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2293412.

The product of its (nonzero) digits is 18816, while the sum is 31.

The spelling of 20403727042 in words is "twenty billion, four hundred three million, seven hundred twenty-seven thousand, forty-two".