120739109 has 4 divisors (see below), whose sum is σ = 121132704. Its totient is φ = 120345516.

The previous prime is 120739057. The next prime is 120739169. The reversal of 120739109 is 901937021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120739109 - 2⁸ = 120738853 is a prime.

It is a super-2 number, since 2×120739109² = 29155864884227762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120739169) 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 3 ways as a sum of consecutive naturals, for example, 196337 + ... + 196950.

It is an arithmetic number, because the mean of its divisors is an integer number (30283176).

Almost surely, 2^120739109 is an apocalyptic number.

It is an amenable number.

120739109 is a deficient number, since it is larger than the sum of its proper divisors (393595).

120739109 is an equidigital number, since it uses as much as digits as its factorization.

120739109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393594.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 120739109 is about 10988.1349190843. The cubic root of 120739109 is about 494.2530092766.

The spelling of 120739109 in words is "one hundred twenty million, seven hundred thirty-nine thousand, one hundred nine".