143342521 has 32 divisors (see below), whose sum is σ = 179815680. Its totient is φ = 111476736.

The previous prime is 143342503. The next prime is 143342557. The reversal of 143342521 is 125243341.

It is not a de Polignac number, because 143342521 - 2⁵ = 143342489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (143342561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 557625 + ... + 557881.

It is an arithmetic number, because the mean of its divisors is an integer number (5619240).

Almost surely, 2^143342521 is an apocalyptic number.

It is an amenable number.

143342521 is a deficient number, since it is larger than the sum of its proper divisors (36473159).

143342521 is a wasteful number, since it uses less digits than its factorization.

143342521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433.

The product of its digits is 2880, while the sum is 25.

The square root of 143342521 is about 11972.5736999193. The cubic root of 143342521 is about 523.3493383162.

Adding to 143342521 its reverse (125243341), we get a palindrome (268585862).

The spelling of 143342521 in words is "one hundred forty-three million, three hundred forty-two thousand, five hundred twenty-one".