142639710 has 64 divisors (see below), whose sum is σ = 350106624. Its totient is φ = 37184000.

The previous prime is 142639709. The next prime is 142639723. The reversal of 142639710 is 17936241.

142639710 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 355510 + ... + 355910.

It is an arithmetic number, because the mean of its divisors is an integer number (5470416).

Almost surely, 2^142639710 is an apocalyptic number.

142639710 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 142639710, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175053312).

142639710 is an abundant number, since it is smaller than the sum of its proper divisors (207466914).

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

142639710 is a wasteful number, since it uses less digits than its factorization.

142639710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 142639710 is about 11943.1867606598. The cubic root of 142639710 is about 522.4926061391.

The spelling of 142639710 in words is "one hundred forty-two million, six hundred thirty-nine thousand, seven hundred ten".