138674143 has 4 divisors (see below), whose sum is σ = 143456040. Its totient is φ = 133892248.

The previous prime is 138674119. The next prime is 138674171. The reversal of 138674143 is 341476831.

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 138674143 - 2¹³ = 138665951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138674243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2390905 + ... + 2390962.

It is an arithmetic number, because the mean of its divisors is an integer number (35864010).

Almost surely, 2^138674143 is an apocalyptic number.

138674143 is a deficient number, since it is larger than the sum of its proper divisors (4781897).

138674143 is an equidigital number, since it uses as much as digits as its factorization.

138674143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4781896.

The product of its digits is 48384, while the sum is 37.

The square root of 138674143 is about 11775.9985988450. The cubic root of 138674143 is about 517.6050404840.

The spelling of 138674143 in words is "one hundred thirty-eight million, six hundred seventy-four thousand, one hundred forty-three".