143420432 has 20 divisors (see below), whose sum is σ = 294223356. Its totient is φ = 67491840.

The previous prime is 143420429. The next prime is 143420447. The reversal of 143420432 is 234024341.

It can be written as a sum of positive squares in 2 ways, for example, as 63425296 + 79995136 = 7964^2 + 8944^2 .

It is a junction number, because it is equal to n+sod(n) for n = 143420398 and 143420407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263369 + ... + 263912.

Almost surely, 2^143420432 is an apocalyptic number.

It is an amenable number.

143420432 is an abundant number, since it is smaller than the sum of its proper divisors (150802924).

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

143420432 is a wasteful number, since it uses less digits than its factorization.

143420432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527306 (or 527300 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 143420432 is about 11975.8269860582. The cubic root of 143420432 is about 523.4441398792. Note that the first 3 decimals are identical.

Adding to 143420432 its reverse (234024341), we get a palindrome (377444773).

The spelling of 143420432 in words is "one hundred forty-three million, four hundred twenty thousand, four hundred thirty-two".