143421053 has 8 divisors (see below), whose sum is σ = 145120248. Its totient is φ = 141731584.

The previous prime is 143421041. The next prime is 143421067. The reversal of 143421053 is 350124341.

It can be written as a sum of positive squares in 4 ways, for example, as 51222649 + 92198404 = 7157^2 + 9602^2 .

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 143421053 - 2¹² = 143416957 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 (143421653) 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, 29675 + ... + 34167.

It is an arithmetic number, because the mean of its divisors is an integer number (18140031).

Almost surely, 2^143421053 is an apocalyptic number.

It is an amenable number.

143421053 is a deficient number, since it is larger than the sum of its proper divisors (1699195).

143421053 is a wasteful number, since it uses less digits than its factorization.

143421053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4863.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 143421053 is about 11975.8529132584. The cubic root of 143421053 is about 523.4448953698. Note that the first 3 decimals are identical.

Adding to 143421053 its reverse (350124341), we get a palindrome (493545394).

The spelling of 143421053 in words is "one hundred forty-three million, four hundred twenty-one thousand, fifty-three".