20321423142 has 8 divisors (see below), whose sum is σ = 40642846296. Its totient is φ = 6773807712.

The previous prime is 20321423053. The next prime is 20321423179. The reversal of 20321423142 is 24132412302.

It is a happy number.

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

20321423142 is an admirable number.

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, 1693451923 + ... + 1693451934.

It is an arithmetic number, because the mean of its divisors is an integer number (5080355787).

Almost surely, 2^20321423142 is an apocalyptic number.

20321423142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20321423142 is a wasteful number, since it uses less digits than its factorization.

20321423142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3386903862.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20321423142 its reverse (24132412302), we get a palindrome (44453835444).

The spelling of 20321423142 in words is "twenty billion, three hundred twenty-one million, four hundred twenty-three thousand, one hundred forty-two".