143220401 has 8 divisors (see below), whose sum is σ = 148320480. Its totient is φ = 138200832.

The previous prime is 143220397. The next prime is 143220431. The reversal of 143220401 is 104022341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 143220401 - 2² = 143220397 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 143220401.

It is not an unprimeable number, because it can be changed into a prime (143220431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16496 + ... + 23633.

It is an arithmetic number, because the mean of its divisors is an integer number (18540060).

Almost surely, 2^143220401 is an apocalyptic number.

It is an amenable number.

143220401 is a deficient number, since it is larger than the sum of its proper divisors (5100079).

143220401 is an equidigital number, since it uses as much as digits as its factorization.

143220401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40255.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 143220401 is about 11967.4726237414. The cubic root of 143220401 is about 523.2006744050.

Adding to 143220401 its reverse (104022341), we get a palindrome (247242742).

The spelling of 143220401 in words is "one hundred forty-three million, two hundred twenty thousand, four hundred one".