118642439 has 8 divisors (see below), whose sum is σ = 126055440. Its totient is φ = 111277696.

The previous prime is 118642379. The next prime is 118642463. The reversal of 118642439 is 934246811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 118642439 - 2¹² = 118638343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118642039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6929 + ... + 16890.

It is an arithmetic number, because the mean of its divisors is an integer number (15756930).

Almost surely, 2^118642439 is an apocalyptic number.

118642439 is a deficient number, since it is larger than the sum of its proper divisors (7413001).

118642439 is a wasteful number, since it uses less digits than its factorization.

118642439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24129.

The product of its digits is 41472, while the sum is 38.

The square root of 118642439 is about 10892.3110036392. The cubic root of 118642439 is about 491.3753377954.

The spelling of 118642439 in words is "one hundred eighteen million, six hundred forty-two thousand, four hundred thirty-nine".