142188120 has 48 divisors (see below), whose sum is σ = 462112560. Its totient is φ = 37916736.

The previous prime is 142188097. The next prime is 142188121. The reversal of 142188120 is 21881241.

142188120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×142188120² = 40434922938268800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142188121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197124 + ... + 197843.

It is an arithmetic number, because the mean of its divisors is an integer number (9627345).

Almost surely, 2^142188120 is an apocalyptic number.

142188120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142188120 is an abundant number, since it is smaller than the sum of its proper divisors (319924440).

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

142188120 is a wasteful number, since it uses less digits than its factorization.

142188120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394984 (or 394977 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 142188120 is about 11924.2660151474. The cubic root of 142188120 is about 521.9406282938.

The spelling of 142188120 in words is "one hundred forty-two million, one hundred eighty-eight thousand, one hundred twenty".