142244220 has 24 divisors (see below), whose sum is σ = 398283984. Its totient is φ = 37931776.

The previous prime is 142244197. The next prime is 142244227. The reversal of 142244220 is 22442241.

142244220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142244227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1185309 + ... + 1185428.

It is an arithmetic number, because the mean of its divisors is an integer number (16595166).

Almost surely, 2^142244220 is an apocalyptic number.

142244220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142244220 is an abundant number, since it is smaller than the sum of its proper divisors (256039764).

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

142244220 is a wasteful number, since it uses less digits than its factorization.

142244220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370749 (or 2370747 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 142244220 is about 11926.6181292100. The cubic root of 142244220 is about 522.0092627648.

Adding to 142244220 its reverse (22442241), we get a palindrome (164686461).

The spelling of 142244220 in words is "one hundred forty-two million, two hundred forty-four thousand, two hundred twenty".