143421444 has 36 divisors (see below), whose sum is σ = 371383740. Its totient is φ = 46640640.

The previous prime is 143421413. The next prime is 143421457. The reversal of 143421444 is 444124341.

It can be written as a sum of positive squares in 2 ways, for example, as 26132544 + 117288900 = 5112^2 + 10830^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47109 + ... + 50060.

It is an arithmetic number, because the mean of its divisors is an integer number (10316215).

Almost surely, 2^143421444 is an apocalyptic number.

It is an amenable number.

143421444 is an abundant number, since it is smaller than the sum of its proper divisors (227962296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143421444 is a wasteful number, since it uses less digits than its factorization.

143421444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97220 (or 97215 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 143421444 is about 11975.8692377631. The cubic root of 143421444 is about 523.4453710479.

Adding to 143421444 its reverse (444124341), we get a palindrome (587545785).

The spelling of 143421444 in words is "one hundred forty-three million, four hundred twenty-one thousand, four hundred forty-four".