143020420 has 12 divisors (see below), whose sum is σ = 300342924. Its totient is φ = 57208160.

The previous prime is 143020399. The next prime is 143020433. The reversal of 143020420 is 24020341.

It can be written as a sum of positive squares in 2 ways, for example, as 77475204 + 65545216 = 8802^2 + 8096^2 .

It is a junction number, because it is equal to n+sod(n) for n = 143020394 and 143020403.

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, 3575491 + ... + 3575530.

It is an arithmetic number, because the mean of its divisors is an integer number (25028577).

Almost surely, 2^143020420 is an apocalyptic number.

143020420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143020420 is an abundant number, since it is smaller than the sum of its proper divisors (157322504).

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

143020420 is a wasteful number, since it uses less digits than its factorization.

143020420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7151030 (or 7151028 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 143020420 is about 11959.1145157156. The cubic root of 143020420 is about 522.9570430738.

Adding to 143020420 its reverse (24020341), we get a palindrome (167040761).

The spelling of 143020420 in words is "one hundred forty-three million, twenty thousand, four hundred twenty".