142720 has 32 divisors (see below), whose sum is σ = 342720. Its totient is φ = 56832.

The previous prime is 142711. The next prime is 142733. The reversal of 142720 is 27241.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 142694 and 142703.

It is a congruent number.

It is an unprimeable number.

142720 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 529 + ... + 751.

It is an arithmetic number, because the mean of its divisors is an integer number (10710).

2¹⁴²⁷²⁰ is an apocalyptic number.

142720 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 142720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171360).

142720 is an abundant number, since it is smaller than the sum of its proper divisors (200000).

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

142720 is an equidigital number, since it uses as much as digits as its factorization.

142720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 142720 is about 377.7830064998. The cubic root of 142720 is about 52.2590622469.

Adding to 142720 its reverse (27241), we get a palindrome (169961).

The spelling of 142720 in words is "one hundred forty-two thousand, seven hundred twenty", and thus it is an iban number.