11720105 has 8 divisors (see below), whose sum is σ = 14136000. Its totient is φ = 9328176.

The previous prime is 11720099. The next prime is 11720117. The reversal of 11720105 is 50102711.

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 11720105 - 2¹⁸ = 11457961 is a prime.

It is a super-2 number, since 2×11720105² = 274721722422050, which contains 22 as substring.

It is an unprimeable number.

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, 4895 + ... + 6884.

It is an arithmetic number, because the mean of its divisors is an integer number (1767000).

Almost surely, 2^11720105 is an apocalyptic number.

It is an amenable number.

11720105 is a deficient number, since it is larger than the sum of its proper divisors (2415895).

11720105 is a wasteful number, since it uses less digits than its factorization.

11720105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11983.

The product of its (nonzero) digits is 70, while the sum is 17.

The square root of 11720105 is about 3423.4638891041. The cubic root of 11720105 is about 227.1488282498.

Adding to 11720105 its reverse (50102711), we get a palindrome (61822816).

The spelling of 11720105 in words is "eleven million, seven hundred twenty thousand, one hundred five".