118422291 has 16 divisors (see below), whose sum is σ = 170934176. Its totient is φ = 72493056.

The previous prime is 118422277. The next prime is 118422371. The reversal of 118422291 is 192224811.

It is a happy number.

It is not a de Polignac number, because 118422291 - 2¹⁰ = 118421267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118422211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340 + ... + 15393.

It is an arithmetic number, because the mean of its divisors is an integer number (10683386).

Almost surely, 2^118422291 is an apocalyptic number.

118422291 is a deficient number, since it is larger than the sum of its proper divisors (52511885).

118422291 is a wasteful number, since it uses less digits than its factorization.

118422291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15942.

The product of its digits is 2304, while the sum is 30.

The square root of 118422291 is about 10882.2006506037. The cubic root of 118422291 is about 491.0712243703.

The spelling of 118422291 in words is "one hundred eighteen million, four hundred twenty-two thousand, two hundred ninety-one".