118042143 has 4 divisors (see below), whose sum is σ = 157389528. Its totient is φ = 78694760.

The previous prime is 118042129. The next prime is 118042147. The reversal of 118042143 is 341240811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 118042143 - 2¹⁸ = 117779999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118042147) 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, 19673688 + ... + 19673693.

It is an arithmetic number, because the mean of its divisors is an integer number (39347382).

Almost surely, 2^118042143 is an apocalyptic number.

118042143 is a deficient number, since it is larger than the sum of its proper divisors (39347385).

118042143 is an equidigital number, since it uses as much as digits as its factorization.

118042143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39347384.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 118042143 is about 10864.7201068412. The cubic root of 118042143 is about 490.5451976876.

Adding to 118042143 its reverse (341240811), we get a palindrome (459282954).

The spelling of 118042143 in words is "one hundred eighteen million, forty-two thousand, one hundred forty-three".