118746721 has 4 divisors (see below), whose sum is σ = 119971012. Its totient is φ = 117522432.

The previous prime is 118746707. The next prime is 118746739. The reversal of 118746721 is 127647811.

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

It can be written as a sum of positive squares in 2 ways, for example, as 48790225 + 69956496 = 6985^2 + 8364^2 .

It is a cyclic number.

It is not a de Polignac number, because 118746721 - 2¹¹ = 118744673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118746421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 612000 + ... + 612193.

It is an arithmetic number, because the mean of its divisors is an integer number (29992753).

Almost surely, 2^118746721 is an apocalyptic number.

It is an amenable number.

118746721 is a deficient number, since it is larger than the sum of its proper divisors (1224291).

118746721 is an equidigital number, since it uses as much as digits as its factorization.

118746721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224290.

The product of its digits is 18816, while the sum is 37.

The square root of 118746721 is about 10897.0969069748. The cubic root of 118746721 is about 491.5192621157.

The spelling of 118746721 in words is "one hundred eighteen million, seven hundred forty-six thousand, seven hundred twenty-one".