118254139 has 4 divisors (see below), whose sum is σ = 118284856. Its totient is φ = 118223424.

The previous prime is 118254137. The next prime is 118254151. The reversal of 118254139 is 931452811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931452811 = 1373 ⋅678407.

It is a cyclic number.

It is not a de Polignac number, because 118254139 - 2¹ = 118254137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118254137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8589 + ... + 17614.

It is an arithmetic number, because the mean of its divisors is an integer number (29571214).

Almost surely, 2^118254139 is an apocalyptic number.

118254139 is a deficient number, since it is larger than the sum of its proper divisors (30717).

118254139 is an equidigital number, since it uses as much as digits as its factorization.

118254139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30716.

The product of its digits is 8640, while the sum is 34.

The square root of 118254139 is about 10874.4718952232. The cubic root of 118254139 is about 490.8386844709.

The spelling of 118254139 in words is "one hundred eighteen million, two hundred fifty-four thousand, one hundred thirty-nine".