118084021 has 6 divisors (see below), whose sum is σ = 129794966. Its totient is φ = 107349000.

The previous prime is 118084019. The next prime is 118084039. The reversal of 118084021 is 120480811.

It can be written as a sum of positive squares in only one way, i.e., 114789796 + 3294225 = 10714^2 + 1815^2 .

It is not a de Polignac number, because 118084021 - 2¹ = 118084019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118084081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 487830 + ... + 488071.

Almost surely, 2^118084021 is an apocalyptic number.

118084021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

118084021 is a deficient number, since it is larger than the sum of its proper divisors (11710945).

118084021 is an equidigital number, since it uses as much as digits as its factorization.

118084021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975923 (or 975912 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 118084021 is about 10866.6471830091. The cubic root of 118084021 is about 490.6032013304.

The spelling of 118084021 in words is "one hundred eighteen million, eighty-four thousand, twenty-one".