120142279 has 4 divisors (see below), whose sum is σ = 120224776. Its totient is φ = 120059784.

The previous prime is 120142277. The next prime is 120142291. The reversal of 120142279 is 972241021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120142279 - 2¹ = 120142277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120142277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39024 + ... + 41989.

It is an arithmetic number, because the mean of its divisors is an integer number (30056194).

Almost surely, 2^120142279 is an apocalyptic number.

120142279 is a deficient number, since it is larger than the sum of its proper divisors (82497).

120142279 is an equidigital number, since it uses as much as digits as its factorization.

120142279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82496.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 120142279 is about 10960.9433444389. The cubic root of 120142279 is about 493.4372768663.

The spelling of 120142279 in words is "one hundred twenty million, one hundred forty-two thousand, two hundred seventy-nine".