20423410042 has 32 divisors (see below), whose sum is σ = 36906595200. Its totient is φ = 8280439488.

The previous prime is 20423410039. The next prime is 20423410079. The reversal of 20423410042 is 24001432402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20423409995 and 20423410022.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134448 + ... + 242740.

It is an arithmetic number, because the mean of its divisors is an integer number (1153331100).

Almost surely, 2^20423410042 is an apocalyptic number.

20423410042 is a deficient number, since it is larger than the sum of its proper divisors (16483185158).

20423410042 is a wasteful number, since it uses less digits than its factorization.

20423410042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109030.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 20423410042 its reverse (24001432402), we get a palindrome (44424842444).

The spelling of 20423410042 in words is "twenty billion, four hundred twenty-three million, four hundred ten thousand, forty-two".