20423011142 has 8 divisors (see below), whose sum is σ = 30779704632. Its totient is φ = 10163109600.

The previous prime is 20423011117. The next prime is 20423011153. The reversal of 20423011142 is 24111032402.

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

It is a super-2 number, since 2×20423011142² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 24197459 + ... + 24198302.

It is an arithmetic number, because the mean of its divisors is an integer number (3847463079).

Almost surely, 2^20423011142 is an apocalyptic number.

20423011142 is a deficient number, since it is larger than the sum of its proper divisors (10356693490).

20423011142 is a wasteful number, since it uses less digits than its factorization.

20423011142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48395974.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20423011142 its reverse (24111032402), we get a palindrome (44534043544).

The spelling of 20423011142 in words is "twenty billion, four hundred twenty-three million, eleven thousand, one hundred forty-two".