142220556544 has 36 divisors (see below), whose sum is σ = 309693348720. Its totient is φ = 64645706240.

The previous prime is 142220556503. The next prime is 142220556707. The reversal of 142220556544 is 445655022241.

It is a junction number, because it is equal to n+sod(n) for n = 142220556497 and 142220556506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25249414 + ... + 25255045.

It is an arithmetic number, because the mean of its divisors is an integer number (8602593020).

Almost surely, 2^142220556544 is an apocalyptic number.

It is an amenable number.

142220556544 is an abundant number, since it is smaller than the sum of its proper divisors (167472792176).

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

142220556544 is an equidigital number, since it uses as much as digits as its factorization.

142220556544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50504486 (or 50504472 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 40.

Adding to 142220556544 its reverse (445655022241), we get a palindrome (587875578785).

The spelling of 142220556544 in words is "one hundred forty-two billion, two hundred twenty million, five hundred fifty-six thousand, five hundred forty-four".