142856720 has 20 divisors (see below), whose sum is σ = 332142060. Its totient is φ = 57142656.

The previous prime is 142856719. The next prime is 142856737. The reversal of 142856720 is 27658241.

It can be written as a sum of positive squares in 2 ways, for example, as 95961616 + 46895104 = 9796^2 + 6848^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 892775 + ... + 892934.

It is an arithmetic number, because the mean of its divisors is an integer number (16607103).

Almost surely, 2^142856720 is an apocalyptic number.

142856720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142856720 is an abundant number, since it is smaller than the sum of its proper divisors (189285340).

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

142856720 is a wasteful number, since it uses less digits than its factorization.

142856720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785722 (or 1785716 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 142856720 is about 11952.2684039474. The cubic root of 142856720 is about 522.7574427863.

The spelling of 142856720 in words is "one hundred forty-two million, eight hundred fifty-six thousand, seven hundred twenty".