142199790 has 64 divisors (see below), whose sum is σ = 355829760. Its totient is φ = 36328320.

The previous prime is 142199779. The next prime is 142199807. The reversal of 142199790 is 97991241.

142199790 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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98796 + ... + 100224.

It is an arithmetic number, because the mean of its divisors is an integer number (5559840).

Almost surely, 2^142199790 is an apocalyptic number.

142199790 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 142199790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177914880).

142199790 is an abundant number, since it is smaller than the sum of its proper divisors (213629970).

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

142199790 is a wasteful number, since it uses less digits than its factorization.

142199790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577.

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 142199790 is about 11924.7553434022. The cubic root of 142199790 is about 521.9549072188.

The spelling of 142199790 in words is "one hundred forty-two million, one hundred ninety-nine thousand, seven hundred ninety".