118420340 has 24 divisors (see below), whose sum is σ = 257259240. Its totient is φ = 45734528.

The previous prime is 118420339. The next prime is 118420373. The reversal of 118420340 is 43024811.

It can be written as a sum of positive squares in 4 ways, for example, as 306916 + 118113424 = 554^2 + 10868^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101507 + ... + 102666.

It is an arithmetic number, because the mean of its divisors is an integer number (10719135).

Almost surely, 2^118420340 is an apocalyptic number.

118420340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118420340 is an abundant number, since it is smaller than the sum of its proper divisors (138838900).

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

118420340 is a wasteful number, since it uses less digits than its factorization.

118420340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204211 (or 204209 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 118420340 is about 10882.1110084395. Note that the first 3 decimals coincide. The cubic root of 118420340 is about 491.0685275660.

The spelling of 118420340 in words is "one hundred eighteen million, four hundred twenty thousand, three hundred forty".