143476421 has 8 divisors (see below), whose sum is σ = 157572000. Its totient is φ = 129556240.

The previous prime is 143476397. The next prime is 143476433. The reversal of 143476421 is 124674341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 143476421 - 2⁶ = 143476357 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 (143476441) 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, 42131 + ... + 45408.

It is an arithmetic number, because the mean of its divisors is an integer number (19696500).

Almost surely, 2^143476421 is an apocalyptic number.

143476421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

143476421 is a deficient number, since it is larger than the sum of its proper divisors (14095579).

143476421 is a wasteful number, since it uses less digits than its factorization.

143476421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87699.

The product of its digits is 16128, while the sum is 32.

The square root of 143476421 is about 11978.1643418347. The cubic root of 143476421 is about 523.5122457056.

The spelling of 143476421 in words is "one hundred forty-three million, four hundred seventy-six thousand, four hundred twenty-one".