142044220 has 24 divisors (see below), whose sum is σ = 298695600. Its totient is φ = 56740992.

The previous prime is 142044169. The next prime is 142044223. The reversal of 142044220 is 22440241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142044223) 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, 11791 + ... + 20569.

It is an arithmetic number, because the mean of its divisors is an integer number (12445650).

Almost surely, 2^142044220 is an apocalyptic number.

142044220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142044220 is an abundant number, since it is smaller than the sum of its proper divisors (156651380).

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

142044220 is a wasteful number, since it uses less digits than its factorization.

142044220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9597 (or 9595 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 142044220 is about 11918.2305733695. The cubic root of 142044220 is about 521.7644940105.

Adding to 142044220 its reverse (22440241), we get a palindrome (164484461).

The spelling of 142044220 in words is "one hundred forty-two million, forty-four thousand, two hundred twenty".