421443143 has 8 divisors (see below), whose sum is σ = 464221056. Its totient is φ = 379409400.

The previous prime is 421443137. The next prime is 421443151. The reversal of 421443143 is 341344124.

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 421443143 - 2⁶ = 421443079 is a prime.

It is a super-2 number, since 2×421443143² = 355228645563436898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421443193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184853 + ... + 187118.

It is an arithmetic number, because the mean of its divisors is an integer number (58027632).

Almost surely, 2^421443143 is an apocalyptic number.

421443143 is a deficient number, since it is larger than the sum of its proper divisors (42777913).

421443143 is a wasteful number, since it uses less digits than its factorization.

421443143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372085.

The product of its digits is 4608, while the sum is 26.

The square root of 421443143 is about 20529.0804226590. The cubic root of 421443143 is about 749.7439973676.

Adding to 421443143 its reverse (341344124), we get a palindrome (762787267).

The spelling of 421443143 in words is "four hundred twenty-one million, four hundred forty-three thousand, one hundred forty-three".