142105280 has 28 divisors (see below), whose sum is σ = 338388960. Its totient is φ = 56841984.

The previous prime is 142105273. The next prime is 142105319. The reversal of 142105280 is 82501241.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221720 + ... + 222359.

It is an arithmetic number, because the mean of its divisors is an integer number (12085320).

Almost surely, 2^142105280 is an apocalyptic number.

142105280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142105280 is an abundant number, since it is smaller than the sum of its proper divisors (196283680).

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

142105280 is an equidigital number, since it uses as much as digits as its factorization.

142105280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444096 (or 444086 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 142105280 is about 11920.7919200026. The cubic root of 142105280 is about 521.8392462627.

The spelling of 142105280 in words is "one hundred forty-two million, one hundred five thousand, two hundred eighty".