143718138 has 40 divisors (see below), whose sum is σ = 330752532. Its totient is φ = 46609344.

The previous prime is 143718137. The next prime is 143718173. The reversal of 143718138 is 831817341.

It can be written as a sum of positive squares in 2 ways, for example, as 138368169 + 5349969 = 11763^2 + 2313^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (143718131) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5995 + ... + 17982.

Almost surely, 2^143718138 is an apocalyptic number.

143718138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

143718138 is an abundant number, since it is smaller than the sum of its proper divisors (187034394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143718138 is a wasteful number, since it uses less digits than its factorization.

143718138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24028 (or 24019 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 143718138 is about 11988.2499973933. The cubic root of 143718138 is about 523.8060705555.

The spelling of 143718138 in words is "one hundred forty-three million, seven hundred eighteen thousand, one hundred thirty-eight".