118545021 has 48 divisors (see below), whose sum is σ = 201435520. Its totient is φ = 65784960.

The previous prime is 118545019. The next prime is 118545061. The reversal of 118545021 is 120545811.

118545021 is a `hidden beast` number, since 118 + 545 + 0 + 2 + 1 = 666.

It is not a de Polignac number, because 118545021 - 2¹ = 118545019 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 (118545001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 418746 + ... + 419028.

Almost surely, 2^118545021 is an apocalyptic number.

It is an amenable number.

118545021 is a deficient number, since it is larger than the sum of its proper divisors (82890499).

118545021 is a wasteful number, since it uses less digits than its factorization.

118545021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 118545021 is about 10887.8382151830. The cubic root of 118545021 is about 491.2408105812.

The spelling of 118545021 in words is "one hundred eighteen million, five hundred forty-five thousand, twenty-one".