120242039 has 4 divisors (see below), whose sum is σ = 120605640. Its totient is φ = 119878440.

The previous prime is 120242021. The next prime is 120242063. The reversal of 120242039 is 930242021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 930242021 = 421 ⋅2209601.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120242039 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 (120242009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181304 + ... + 181965.

It is an arithmetic number, because the mean of its divisors is an integer number (30151410).

Almost surely, 2^120242039 is an apocalyptic number.

120242039 is a deficient number, since it is larger than the sum of its proper divisors (363601).

120242039 is an equidigital number, since it uses as much as digits as its factorization.

120242039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363600.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 120242039 is about 10965.4931033675. The cubic root of 120242039 is about 493.5738141028.

The spelling of 120242039 in words is "one hundred twenty million, two hundred forty-two thousand, thirty-nine".