143246424217 has 4 divisors (see below), whose sum is σ = 154265379940. Its totient is φ = 132227468496.

The previous prime is 143246424197. The next prime is 143246424221. The reversal of 143246424217 is 712424642341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91976332176 + 51270092041 = 303276^2 + 226429^2 .

It is a cyclic number.

It is not a de Polignac number, because 143246424217 - 2²³ = 143238035609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 143246424217.

It is not an unprimeable number, because it can be changed into a prime (143246424227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5509477842 + ... + 5509477867.

It is an arithmetic number, because the mean of its divisors is an integer number (38566344985).

Almost surely, 2^143246424217 is an apocalyptic number.

It is an amenable number.

143246424217 is a deficient number, since it is larger than the sum of its proper divisors (11018955723).

143246424217 is a wasteful number, since it uses less digits than its factorization.

143246424217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11018955722.

The product of its digits is 258048, while the sum is 40.

The spelling of 143246424217 in words is "one hundred forty-three billion, two hundred forty-six million, four hundred twenty-four thousand, two hundred seventeen".