143520423 has 4 divisors (see below), whose sum is σ = 191360568. Its totient is φ = 95680280.

The previous prime is 143520407. The next prime is 143520431. The reversal of 143520423 is 324025341.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 143520423 - 2⁴ = 143520407 is a prime.

It is a super-2 number, since 2×143520423² = 41196223636197858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 143520393 and 143520402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143520463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23920068 + ... + 23920073.

It is an arithmetic number, because the mean of its divisors is an integer number (47840142).

Almost surely, 2^143520423 is an apocalyptic number.

143520423 is a deficient number, since it is larger than the sum of its proper divisors (47840145).

143520423 is an equidigital number, since it uses as much as digits as its factorization.

143520423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47840144.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 143520423 is about 11980.0009599332. Note that the first 3 decimals coincide. The cubic root of 143520423 is about 523.5657579394.

Adding to 143520423 its reverse (324025341), we get a palindrome (467545764).

The spelling of 143520423 in words is "one hundred forty-three million, five hundred twenty thousand, four hundred twenty-three".