118906 has 4 divisors (see below), whose sum is σ = 178362. Its totient is φ = 59452.

The previous prime is 118903. The next prime is 118907. The reversal of 118906 is 609811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 609811 = 379 ⋅1609.

It can be written as a sum of positive squares in only one way, i.e., 84681 + 34225 = 291^2 + 185^2 .

It is not an unprimeable number, because it can be changed into a prime (118901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29725 + ... + 29728.

2¹¹⁸⁹⁰⁶ is an apocalyptic number.

118906 is a deficient number, since it is larger than the sum of its proper divisors (59456).

118906 is an equidigital number, since it uses as much as digits as its factorization.

118906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59455.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 118906 is about 344.8274931034. The cubic root of 118906 is about 49.1738927743.

It can be divided in two parts, 118 and 906, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 118906 in words is "one hundred eighteen thousand, nine hundred six".