20423132042 has 8 divisors (see below), whose sum is σ = 31212711396. Its totient is φ = 10018894912.

The previous prime is 20423132039. The next prime is 20423132077. The reversal of 20423132042 is 24023132402.

It can be written as a sum of positive squares in 2 ways, for example, as 20045179561 + 377952481 = 141581^2 + 19441^2 .

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 = 20423131999 and 20423132017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96335423 + ... + 96335634.

Almost surely, 2^20423132042 is an apocalyptic number.

20423132042 is a deficient number, since it is larger than the sum of its proper divisors (10789579354).

20423132042 is a wasteful number, since it uses less digits than its factorization.

20423132042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192671112.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20423132042 its reverse (24023132402), we get a palindrome (44446264444).

The spelling of 20423132042 in words is "twenty billion, four hundred twenty-three million, one hundred thirty-two thousand, forty-two".