143605404421 has 4 divisors (see below), whose sum is σ = 143823319200. Its totient is φ = 143387489644.

The previous prime is 143605404419. The next prime is 143605404443. The reversal of 143605404421 is 124404506341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 143605404421 - 2¹ = 143605404419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143605404491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108956401 + ... + 108957718.

It is an arithmetic number, because the mean of its divisors is an integer number (35955829800).

Almost surely, 2^143605404421 is an apocalyptic number.

It is an amenable number.

143605404421 is a deficient number, since it is larger than the sum of its proper divisors (217914779).

143605404421 is an equidigital number, since it uses as much as digits as its factorization.

143605404421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217914778.

The product of its (nonzero) digits is 46080, while the sum is 34.

The spelling of 143605404421 in words is "one hundred forty-three billion, six hundred five million, four hundred four thousand, four hundred twenty-one".