142544140 has 24 divisors (see below), whose sum is σ = 306306000. Its totient is φ = 55691328.

The previous prime is 142544123. The next prime is 142544161. The reversal of 142544140 is 41445241.

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, 82015 + ... + 83734.

It is an arithmetic number, because the mean of its divisors is an integer number (12762750).

Almost surely, 2^142544140 is an apocalyptic number.

142544140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142544140 is an abundant number, since it is smaller than the sum of its proper divisors (163761860).

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

142544140 is a wasteful number, since it uses less digits than its factorization.

142544140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165801 (or 165799 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 142544140 is about 11939.1850643166. The cubic root of 142544140 is about 522.3758883501.

Adding to 142544140 its reverse (41445241), we get a palindrome (183989381).

The spelling of 142544140 in words is "one hundred forty-two million, five hundred forty-four thousand, one hundred forty".