142222121420 has 24 divisors (see below), whose sum is σ = 298760834400. Its totient is φ = 56870871552.

The previous prime is 142222121417. The next prime is 142222121449. The reversal of 142222121420 is 24121222241.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1058600 + ... + 1185359.

It is an arithmetic number, because the mean of its divisors is an integer number (12448368100).

Almost surely, 2^142222121420 is an apocalyptic number.

142222121420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142222121420 is an abundant number, since it is smaller than the sum of its proper divisors (156538712980).

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

142222121420 is a wasteful number, since it uses less digits than its factorization.

142222121420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2247137 (or 2247135 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 142222121420 its reverse (24121222241), we get a palindrome (166343343661).

The spelling of 142222121420 in words is "one hundred forty-two billion, two hundred twenty-two million, one hundred twenty-one thousand, four hundred twenty".