143496421 has 2 divisors, whose sum is σ = 143496422. Its totient is φ = 143496420.

The previous prime is 143496413. The next prime is 143496481. The reversal of 143496421 is 124694341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110880900 + 32615521 = 10530^2 + 5711^2 .

It is an emirp because it is prime and its reverse (124694341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143496421 - 2³ = 143496413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143496401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71748210 + 71748211.

It is an arithmetic number, because the mean of its divisors is an integer number (71748211).

Almost surely, 2^143496421 is an apocalyptic number.

It is an amenable number.

143496421 is a deficient number, since it is larger than the sum of its proper divisors (1).

143496421 is an equidigital number, since it uses as much as digits as its factorization.

143496421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 143496421 is about 11978.9991652057. Note that the first 3 decimals coincide. The cubic root of 143496421 is about 523.5365696987.

The spelling of 143496421 in words is "one hundred forty-three million, four hundred ninety-six thousand, four hundred twenty-one".