143972117 has 2 divisors, whose sum is σ = 143972118. Its totient is φ = 143972116.

The previous prime is 143972113. The next prime is 143972119. The reversal of 143972117 is 711279341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89226916 + 54745201 = 9446^2 + 7399^2 .

It is a cyclic number.

It is not a de Polignac number, because 143972117 - 2² = 143972113 is a prime.

It is a super-3 number, since 3×143972117³ (a number of 25 digits) contains 333 as substring.

Together with 143972119, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143972113) 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 as a sum of consecutive naturals, namely, 71986058 + 71986059.

It is an arithmetic number, because the mean of its divisors is an integer number (71986059).

Almost surely, 2^143972117 is an apocalyptic number.

It is an amenable number.

143972117 is a deficient number, since it is larger than the sum of its proper divisors (1).

143972117 is an equidigital number, since it uses as much as digits as its factorization.

143972117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 35.

The square root of 143972117 is about 11998.8381520879. The cubic root of 143972117 is about 524.1144460412.

The spelling of 143972117 in words is "one hundred forty-three million, nine hundred seventy-two thousand, one hundred seventeen".