12142103420 has 96 divisors (see below), whose sum is σ = 26911180800. Its totient is φ = 4592935424.

The previous prime is 12142103419. The next prime is 12142103447. The reversal of 12142103420 is 2430124121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12142103392 and 12142103401.

It is a congruent number.

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, 19678952 + ... + 19679568.

It is an arithmetic number, because the mean of its divisors is an integer number (280324800).

Almost surely, 2^12142103420 is an apocalyptic number.

12142103420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12142103420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13455590400).

12142103420 is an abundant number, since it is smaller than the sum of its proper divisors (14769077380).

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

12142103420 is a wasteful number, since it uses less digits than its factorization.

12142103420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067 (or 1065 counting only the distinct ones).

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

Adding to 12142103420 its reverse (2430124121), we get a palindrome (14572227541).

The spelling of 12142103420 in words is "twelve billion, one hundred forty-two million, one hundred three thousand, four hundred twenty".