120340839 has 8 divisors (see below), whose sum is σ = 160527600. Its totient is φ = 80190656.

The previous prime is 120340837. The next prime is 120340859. The reversal of 120340839 is 938043021.

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

It is a cyclic number.

It is not a de Polignac number, because 120340839 - 2¹ = 120340837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120340837) by changing a digit.

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, 222 + ... + 15515.

It is an arithmetic number, because the mean of its divisors is an integer number (20065950).

Almost surely, 2^120340839 is an apocalyptic number.

120340839 is a deficient number, since it is larger than the sum of its proper divisors (40186761).

120340839 is a wasteful number, since it uses less digits than its factorization.

120340839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18289.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 120340839 is about 10969.9972196897. The cubic root of 120340839 is about 493.7089630157.

The spelling of 120340839 in words is "one hundred twenty million, three hundred forty thousand, eight hundred thirty-nine".