142120345 has 8 divisors (see below), whose sum is σ = 172946880. Its totient is φ = 112094640.

The previous prime is 142120291. The next prime is 142120369. The reversal of 142120345 is 543021241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142120345 - 2⁷ = 142120217 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199815 + ... + 200524.

It is an arithmetic number, because the mean of its divisors is an integer number (21618360).

Almost surely, 2^142120345 is an apocalyptic number.

It is an amenable number.

142120345 is a deficient number, since it is larger than the sum of its proper divisors (30826535).

142120345 is an equidigital number, since it uses as much as digits as its factorization.

142120345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400415.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 142120345 is about 11921.4237824179. The cubic root of 142120345 is about 521.8576861838.

Adding to 142120345 its reverse (543021241), we get a palindrome (685141586).

The spelling of 142120345 in words is "one hundred forty-two million, one hundred twenty thousand, three hundred forty-five".