20423041420434 has 64 divisors (see below), whose sum is σ = 42836552922240. Its totient is φ = 6483978708480.

The previous prime is 20423041420417. The next prime is 20423041420447. The reversal of 20423041420434 is 43402414032402.

It is a junction number, because it is equal to n+sod(n) for n = 20423041420395 and 20423041420404.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20986984 + ... + 21938540.

It is an arithmetic number, because the mean of its divisors is an integer number (669321139410).

Almost surely, 2^{20423041420434} is an apocalyptic number.

20423041420434 is an abundant number, since it is smaller than the sum of its proper divisors (22413511501806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20423041420434 is a wasteful number, since it uses less digits than its factorization.

20423041420434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953675.

The product of its (nonzero) digits is 73728, while the sum is 33.

Adding to 20423041420434 its reverse (43402414032402), we get a palindrome (63825455452836).

The spelling of 20423041420434 in words is "twenty trillion, four hundred twenty-three billion, forty-one million, four hundred twenty thousand, four hundred thirty-four".