143400521 has 4 divisors (see below), whose sum is σ = 156436944. Its totient is φ = 130364100.

The previous prime is 143400497. The next prime is 143400527. The reversal of 143400521 is 125004341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143400521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143400493 and 143400502.

It is not an unprimeable number, because it can be changed into a prime (143400527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6518195 + ... + 6518216.

It is an arithmetic number, because the mean of its divisors is an integer number (39109236).

Almost surely, 2^143400521 is an apocalyptic number.

143400521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

143400521 is a deficient number, since it is larger than the sum of its proper divisors (13036423).

143400521 is a wasteful number, since it uses less digits than its factorization.

143400521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13036422.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 143400521 is about 11974.9956576193. The cubic root of 143400521 is about 523.4199155795.

Adding to 143400521 its reverse (125004341), we get a palindrome (268404862).

The spelling of 143400521 in words is "one hundred forty-three million, four hundred thousand, five hundred twenty-one".