142812720 has 100 divisors (see below), whose sum is σ = 496032240. Its totient is φ = 38081664.

The previous prime is 142812707. The next prime is 142812731. The reversal of 142812720 is 27218241.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4540 + ... + 17499.

Almost surely, 2^142812720 is an apocalyptic number.

142812720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142812720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248016120).

142812720 is an abundant number, since it is smaller than the sum of its proper divisors (353219520).

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

142812720 is a wasteful number, since it uses less digits than its factorization.

142812720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22064 (or 22049 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 142812720 is about 11950.4276074122. The cubic root of 142812720 is about 522.7037673523.

The spelling of 142812720 in words is "one hundred forty-two million, eight hundred twelve thousand, seven hundred twenty".