12420142532 has 48 divisors (see below), whose sum is σ = 25558845312. Its totient is φ = 5170314240.

The previous prime is 12420142513. The next prime is 12420142541. The reversal of 12420142532 is 23524102421.

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, 189428 + ... + 246420.

It is an arithmetic number, because the mean of its divisors is an integer number (532475944).

Almost surely, 2^12420142532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12420142532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12779422656).

12420142532 is an abundant number, since it is smaller than the sum of its proper divisors (13138702780).

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

12420142532 is a wasteful number, since it uses less digits than its factorization.

12420142532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57228 (or 57226 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 12420142532 its reverse (23524102421), we get a palindrome (35944244953).

The spelling of 12420142532 in words is "twelve billion, four hundred twenty million, one hundred forty-two thousand, five hundred thirty-two".