143214421 has 4 divisors (see below), whose sum is σ = 163673632. Its totient is φ = 122755212.

The previous prime is 143214403. The next prime is 143214431. The reversal of 143214421 is 124412341.

It is a happy number.

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 143214421 - 2¹⁷ = 143083349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143214392 and 143214401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143214431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10229595 + ... + 10229608.

It is an arithmetic number, because the mean of its divisors is an integer number (40918408).

Almost surely, 2^143214421 is an apocalyptic number.

It is an amenable number.

143214421 is a deficient number, since it is larger than the sum of its proper divisors (20459211).

143214421 is an equidigital number, since it uses as much as digits as its factorization.

143214421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20459210.

The product of its digits is 768, while the sum is 22.

The square root of 143214421 is about 11967.2227772362. Note that the first 3 decimals coincide. The cubic root of 143214421 is about 523.1933924266.

Adding to 143214421 its reverse (124412341), we get a palindrome (267626762).

The spelling of 143214421 in words is "one hundred forty-three million, two hundred fourteen thousand, four hundred twenty-one".