142244120 has 32 divisors (see below), whose sum is σ = 330376320. Its totient is φ = 55061760.

The previous prime is 142244111. The next prime is 142244143. The reversal of 142244120 is 21442241.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 142244092 and 142244101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56117 + ... + 58596.

It is an arithmetic number, because the mean of its divisors is an integer number (10324260).

Almost surely, 2^142244120 is an apocalyptic number.

142244120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142244120 is an abundant number, since it is smaller than the sum of its proper divisors (188132200).

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

142244120 is a wasteful number, since it uses less digits than its factorization.

142244120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114755 (or 114751 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 142244120 is about 11926.6139369060. The cubic root of 142244120 is about 522.0091404378.

Adding to 142244120 its reverse (21442241), we get a palindrome (163686361).

The spelling of 142244120 in words is "one hundred forty-two million, two hundred forty-four thousand, one hundred twenty".