142221020442 has 16 divisors (see below), whose sum is σ = 285089977920. Its totient is φ = 47299017312.

The previous prime is 142221020437. The next prime is 142221020453. The reversal of 142221020442 is 244020122241.

It is a happy number.

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, 26994523 + ... + 26999790.

It is an arithmetic number, because the mean of its divisors is an integer number (17818123620).

Almost surely, 2^142221020442 is an apocalyptic number.

142221020442 is an abundant number, since it is smaller than the sum of its proper divisors (142868957478).

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

142221020442 is a wasteful number, since it uses less digits than its factorization.

142221020442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53994757.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 142221020442 its reverse (244020122241), we get a palindrome (386241142683).

The spelling of 142221020442 in words is "one hundred forty-two billion, two hundred twenty-one million, twenty thousand, four hundred forty-two".