143148421 has 16 divisors (see below), whose sum is σ = 159667200. Its totient is φ = 127445760.

The previous prime is 143148403. The next prime is 143148463. The reversal of 143148421 is 124841341.

It is not a de Polignac number, because 143148421 - 2¹³ = 143140229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 143148421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143148221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238680 + ... + 239278.

It is an arithmetic number, because the mean of its divisors is an integer number (9979200).

Almost surely, 2^143148421 is an apocalyptic number.

It is an amenable number.

143148421 is a deficient number, since it is larger than the sum of its proper divisors (16518779).

143148421 is a wasteful number, since it uses less digits than its factorization.

143148421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236.

The product of its digits is 3072, while the sum is 28.

The square root of 143148421 is about 11964.4649274424. The cubic root of 143148421 is about 523.1130092979.

Adding to 143148421 its reverse (124841341), we get a palindrome (267989762).

The spelling of 143148421 in words is "one hundred forty-three million, one hundred forty-eight thousand, four hundred twenty-one".