421432143 has 8 divisors (see below), whose sum is σ = 612992256. Its totient is φ = 255413400.

The previous prime is 421432129. The next prime is 421432171. The reversal of 421432143 is 341234124.

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

It is not a de Polignac number, because 421432143 - 2⁵ = 421432111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421432943) 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, 6385303 + ... + 6385368.

It is an arithmetic number, because the mean of its divisors is an integer number (76624032).

Almost surely, 2^421432143 is an apocalyptic number.

421432143 is a deficient number, since it is larger than the sum of its proper divisors (191560113).

421432143 is a wasteful number, since it uses less digits than its factorization.

421432143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12770685.

The product of its digits is 2304, while the sum is 24.

The square root of 421432143 is about 20528.8125082772. The cubic root of 421432143 is about 749.7374743400.

Adding to 421432143 its reverse (341234124), we get a palindrome (762666267).

The spelling of 421432143 in words is "four hundred twenty-one million, four hundred thirty-two thousand, one hundred forty-three".