120669539 has 4 divisors (see below), whose sum is σ = 123237024. Its totient is φ = 118102056.

The previous prime is 120669533. The next prime is 120669557. The reversal of 120669539 is 935966021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120669539 is a prime.

It is a super-2 number, since 2×120669539² = 29122275284945042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120669496 and 120669505.

It is not an unprimeable number, because it can be changed into a prime (120669533) 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, 1283672 + ... + 1283765.

It is an arithmetic number, because the mean of its divisors is an integer number (30809256).

Almost surely, 2^120669539 is an apocalyptic number.

120669539 is a deficient number, since it is larger than the sum of its proper divisors (2567485).

120669539 is an equidigital number, since it uses as much as digits as its factorization.

120669539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567484.

The product of its (nonzero) digits is 87480, while the sum is 41.

The square root of 120669539 is about 10984.9687755587. The cubic root of 120669539 is about 494.1580613389.

The spelling of 120669539 in words is "one hundred twenty million, six hundred sixty-nine thousand, five hundred thirty-nine".