143942017 has 2 divisors, whose sum is σ = 143942018. Its totient is φ = 143942016.

The previous prime is 143941961. The next prime is 143942023. The reversal of 143942017 is 710249341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125417601 + 18524416 = 11199^2 + 4304^2 .

It is a cyclic number.

It is not a de Polignac number, because 143942017 - 2²³ = 135553409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143942017.

It is not a weakly prime, because it can be changed into another prime (143942087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71971008 + 71971009.

It is an arithmetic number, because the mean of its divisors is an integer number (71971009).

Almost surely, 2^143942017 is an apocalyptic number.

It is an amenable number.

143942017 is a deficient number, since it is larger than the sum of its proper divisors (1).

143942017 is an equidigital number, since it uses as much as digits as its factorization.

143942017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 143942017 is about 11997.5837984154. The cubic root of 143942017 is about 524.0779182637.

The spelling of 143942017 in words is "one hundred forty-three million, nine hundred forty-two thousand, seventeen".