142647122644 has 48 divisors (see below), whose sum is σ = 273205554048. Its totient is φ = 64769367168.

The previous prime is 142647122641. The next prime is 142647122687. The reversal of 142647122644 is 446221746241.

142647122644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×142647122644² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142647122644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142647122641) 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 15 ways as a sum of consecutive naturals, for example, 2666649 + ... + 2719615.

It is an arithmetic number, because the mean of its divisors is an integer number (5691782376).

Almost surely, 2^142647122644 is an apocalyptic number.

It is an amenable number.

142647122644 is a deficient number, since it is larger than the sum of its proper divisors (130558431404).

142647122644 is a wasteful number, since it uses less digits than its factorization.

142647122644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53824 (or 53822 counting only the distinct ones).

The product of its digits is 516096, while the sum is 43.

Adding to 142647122644 its reverse (446221746241), we get a palindrome (588868868885).

The spelling of 142647122644 in words is "one hundred forty-two billion, six hundred forty-seven million, one hundred twenty-two thousand, six hundred forty-four".