143679961 has 2 divisors, whose sum is σ = 143679962. Its totient is φ = 143679960.

The previous prime is 143679929. The next prime is 143679967. The reversal of 143679961 is 169976341.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140564736 + 3115225 = 11856^2 + 1765^2 .

It is a cyclic number.

It is not a de Polignac number, because 143679961 - 2⁵ = 143679929 is a prime.

It is not a weakly prime, because it can be changed into another prime (143679967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71839980 + 71839981.

It is an arithmetic number, because the mean of its divisors is an integer number (71839981).

Almost surely, 2^143679961 is an apocalyptic number.

143679961 is the 6921-st hex number.

It is an amenable number.

143679961 is a deficient number, since it is larger than the sum of its proper divisors (1).

143679961 is an equidigital number, since it uses as much as digits as its factorization.

143679961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 46.

The square root of 143679961 is about 11986.6576242087. The cubic root of 143679961 is about 523.7596855142.

The spelling of 143679961 in words is "one hundred forty-three million, six hundred seventy-nine thousand, nine hundred sixty-one".