142717720 has 64 divisors (see below), whose sum is σ = 348364800. Its totient is φ = 52408320.

The previous prime is 142717717. The next prime is 142717781. The reversal of 142717720 is 27717241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25321 + ... + 30439.

It is an arithmetic number, because the mean of its divisors is an integer number (5443200).

Almost surely, 2^142717720 is an apocalyptic number.

142717720 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 142717720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174182400).

142717720 is an abundant number, since it is smaller than the sum of its proper divisors (205647080).

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

142717720 is a wasteful number, since it uses less digits than its factorization.

142717720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5188 (or 5184 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 31.

The square root of 142717720 is about 11946.4521930153. The cubic root of 142717720 is about 522.5878396005.

The spelling of 142717720 in words is "one hundred forty-two million, seven hundred seventeen thousand, seven hundred twenty".