118142389 has 2 divisors, whose sum is σ = 118142390. Its totient is φ = 118142388.

The previous prime is 118142357. The next prime is 118142419. The reversal of 118142389 is 983241811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117831025 + 311364 = 10855^2 + 558^2 .

It is a cyclic number.

It is not a de Polignac number, because 118142389 - 2⁵ = 118142357 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118142309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59071194 + 59071195.

It is an arithmetic number, because the mean of its divisors is an integer number (59071195).

Almost surely, 2^118142389 is an apocalyptic number.

It is an amenable number.

118142389 is a deficient number, since it is larger than the sum of its proper divisors (1).

118142389 is an equidigital number, since it uses as much as digits as its factorization.

118142389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 37.

The square root of 118142389 is about 10869.3325002044. The cubic root of 118142389 is about 490.6840217796.

The spelling of 118142389 in words is "one hundred eighteen million, one hundred forty-two thousand, three hundred eighty-nine".