142246926521 has 4 divisors (see below), whose sum is σ = 162567916032. Its totient is φ = 121925937012.

The previous prime is 142246926467. The next prime is 142246926527. The reversal of 142246926521 is 125629642241.

142246926521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142246926521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142246926527) by changing a digit.

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, 10160494745 + ... + 10160494758.

It is an arithmetic number, because the mean of its divisors is an integer number (40641979008).

Almost surely, 2^142246926521 is an apocalyptic number.

It is an amenable number.

142246926521 is a deficient number, since it is larger than the sum of its proper divisors (20320989511).

142246926521 is an equidigital number, since it uses as much as digits as its factorization.

142246926521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20320989510.

The product of its digits is 414720, while the sum is 44.

The spelling of 142246926521 in words is "one hundred forty-two billion, two hundred forty-six million, nine hundred twenty-six thousand, five hundred twenty-one".