403421143 has 4 divisors (see below), whose sum is σ = 403491088. Its totient is φ = 403351200.

The previous prime is 403421119. The next prime is 403421153. The reversal of 403421143 is 341124304.

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

It is a cyclic number.

It is not a de Polignac number, because 403421143 - 2⁹ = 403420631 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 (403421153) 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, 25458 + ... + 38143.

It is an arithmetic number, because the mean of its divisors is an integer number (100872772).

Almost surely, 2^403421143 is an apocalyptic number.

403421143 is a deficient number, since it is larger than the sum of its proper divisors (69945).

403421143 is an equidigital number, since it uses as much as digits as its factorization.

403421143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69944.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 403421143 is about 20085.3464744823. The cubic root of 403421143 is about 738.9009390748.

Adding to 403421143 its reverse (341124304), we get a palindrome (744545447).

The spelling of 403421143 in words is "four hundred three million, four hundred twenty-one thousand, one hundred forty-three".