143421144 has 16 divisors (see below), whose sum is σ = 358552920. Its totient is φ = 47807040.

The previous prime is 143421143. The next prime is 143421181. The reversal of 143421144 is 441124341.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 5975881 = 143421144 / (1 + 4 + 3 + 4 + 2 + 1 + 1 + 4 + 4).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143421143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2987917 + ... + 2987964.

Almost surely, 2^143421144 is an apocalyptic number.

It is an amenable number.

143421144 is an abundant number, since it is smaller than the sum of its proper divisors (215131776).

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

143421144 is a wasteful number, since it uses less digits than its factorization.

143421144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5975890 (or 5975886 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 143421144 is about 11975.8567125697. The cubic root of 143421144 is about 523.4450060776.

Adding to 143421144 its reverse (441124341), we get a palindrome (584545485).

It can be divided in two parts, 1434 and 21144, that added together give a triangular number (22578 = T₂₁₂).

The spelling of 143421144 in words is "one hundred forty-three million, four hundred twenty-one thousand, one hundred forty-four".