118423420 has 24 divisors (see below), whose sum is σ = 251257104. Its totient is φ = 46880256.

The previous prime is 118423399. The next prime is 118423423. The reversal of 118423420 is 24324811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118423423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28582 + ... + 32461.

It is an arithmetic number, because the mean of its divisors is an integer number (10469046).

Almost surely, 2^118423420 is an apocalyptic number.

118423420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118423420 is an abundant number, since it is smaller than the sum of its proper divisors (132833684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

118423420 is a wasteful number, since it uses less digits than its factorization.

118423420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61149 (or 61147 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 118423420 is about 10882.2525241790. The cubic root of 118423420 is about 491.0727849370.

The spelling of 118423420 in words is "one hundred eighteen million, four hundred twenty-three thousand, four hundred twenty".