143904017 has 2 divisors, whose sum is σ = 143904018. Its totient is φ = 143904016.

The previous prime is 143904001. The next prime is 143904037. The reversal of 143904017 is 710409341.

It is a Cunningham number, because it is equal to 11996²+1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143904016 + 1 = 11996^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 143904017 - 2⁴ = 143904001 is a prime.

It is a super-2 number, since 2×143904017² = 41416732217472578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (143904037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71952008 + 71952009.

It is an arithmetic number, because the mean of its divisors is an integer number (71952009).

Almost surely, 2^143904017 is an apocalyptic number.

It is an amenable number.

143904017 is a deficient number, since it is larger than the sum of its proper divisors (1).

143904017 is an equidigital number, since it uses as much as digits as its factorization.

143904017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 143904017 is about 11996.0000416806. Note that the first 4 decimals coincide. The cubic root of 143904017 is about 524.0317961884.

The spelling of 143904017 in words is "one hundred forty-three million, nine hundred four thousand, seventeen".