142221605544 has 32 divisors (see below), whose sum is σ = 395060016000. Its totient is φ = 47407201776.

The previous prime is 142221605531. The next prime is 142221605563. The reversal of 142221605544 is 445506122241.

142221605544 is a `hidden beast` number, since 1 + 4 + 2 + 2 + 2 + 1 + 605 + 5 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 142221605499 and 142221605508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329216464 + ... + 329216895.

It is an arithmetic number, because the mean of its divisors is an integer number (12345625500).

Almost surely, 2^142221605544 is an apocalyptic number.

It is an amenable number.

142221605544 is an abundant number, since it is smaller than the sum of its proper divisors (252838410456).

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

142221605544 is a wasteful number, since it uses less digits than its factorization.

142221605544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658433374 (or 658433364 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 142221605544 its reverse (445506122241), we get a palindrome (587727727785).

The spelling of 142221605544 in words is "one hundred forty-two billion, two hundred twenty-one million, six hundred five thousand, five hundred forty-four".