20423412142 has 16 divisors (see below), whose sum is σ = 35136166752. Its totient is φ = 8721740160.

The previous prime is 20423412133. The next prime is 20423412167. The reversal of 20423412142 is 24121432402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2591823 + ... + 2599690.

It is an arithmetic number, because the mean of its divisors is an integer number (2196010422).

Almost surely, 2^20423412142 is an apocalyptic number.

20423412142 is a deficient number, since it is larger than the sum of its proper divisors (14712754610).

20423412142 is a wasteful number, since it uses less digits than its factorization.

20423412142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5191803.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 20423412142 its reverse (24121432402), we get a palindrome (44544844544).

The spelling of 20423412142 in words is "twenty billion, four hundred twenty-three million, four hundred twelve thousand, one hundred forty-two".