12506021142 has 8 divisors (see below), whose sum is σ = 25012042296. Its totient is φ = 4168673712.

The previous prime is 12506021131. The next prime is 12506021191. The reversal of 12506021142 is 24112060521.

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

12506021142 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1042168423 + ... + 1042168434.

It is an arithmetic number, because the mean of its divisors is an integer number (3126505287).

Almost surely, 2^12506021142 is an apocalyptic number.

12506021142 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.

12506021142 is a wasteful number, since it uses less digits than its factorization.

12506021142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2084336862.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 12506021142 its reverse (24112060521), we get a palindrome (36618081663).

The spelling of 12506021142 in words is "twelve billion, five hundred six million, twenty-one thousand, one hundred forty-two".