143020040 has 32 divisors (see below), whose sum is σ = 324990360. Its totient is φ = 56640000.

The previous prime is 143020027. The next prime is 143020043. The reversal of 143020040 is 40020341.

It can be written as a sum of positive squares in 4 ways, for example, as 127825636 + 15194404 = 11306^2 + 3898^2 .

It is a junction number, because it is equal to n+sod(n) for n = 143019997 and 143020024.

It is not an unprimeable number, because it can be changed into a prime (143020043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13661 + ... + 21740.

Almost surely, 2^143020040 is an apocalyptic number.

143020040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143020040 is an abundant number, since it is smaller than the sum of its proper divisors (181970320).

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

143020040 is a wasteful number, since it uses less digits than its factorization.

143020040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35513 (or 35509 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 143020040 is about 11959.0986282412. The cubic root of 143020040 is about 522.9565799142.

Adding to 143020040 its reverse (40020341), we get a palindrome (183040381).

The spelling of 143020040 in words is "one hundred forty-three million, twenty thousand, forty".