143430421 has 4 divisors (see below), whose sum is σ = 143524332. Its totient is φ = 143336512.

The previous prime is 143430379. The next prime is 143430431. The reversal of 143430421 is 124034341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124034341 = 10301 ⋅12041.

It can be written as a sum of positive squares in 2 ways, for example, as 50211396 + 93219025 = 7086^2 + 9655^2 .

It is a cyclic number.

It is not a de Polignac number, because 143430421 - 2¹³ = 143422229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143430392 and 143430401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143430431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44626 + ... + 47731.

It is an arithmetic number, because the mean of its divisors is an integer number (35881083).

Almost surely, 2^143430421 is an apocalyptic number.

It is an amenable number.

143430421 is a deficient number, since it is larger than the sum of its proper divisors (93911).

143430421 is an equidigital number, since it uses as much as digits as its factorization.

143430421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93910.

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

The square root of 143430421 is about 11976.2440272399. The cubic root of 143430421 is about 523.4562919417.

Adding to 143430421 its reverse (124034341), we get a palindrome (267464762).

The spelling of 143430421 in words is "one hundred forty-three million, four hundred thirty thousand, four hundred twenty-one".