143246473 has 2 divisors, whose sum is σ = 143246474. Its totient is φ = 143246472.

The previous prime is 143246431. The next prime is 143246489. The reversal of 143246473 is 374642341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137428729 + 5817744 = 11723^2 + 2412^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143246473 is a prime.

It is not a weakly prime, because it can be changed into another prime (143246413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71623236 + 71623237.

It is an arithmetic number, because the mean of its divisors is an integer number (71623237).

Almost surely, 2^143246473 is an apocalyptic number.

It is an amenable number.

143246473 is a deficient number, since it is larger than the sum of its proper divisors (1).

143246473 is an equidigital number, since it uses as much as digits as its factorization.

143246473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 34.

The square root of 143246473 is about 11968.5618601401. The cubic root of 143246473 is about 523.2324204882.

The spelling of 143246473 in words is "one hundred forty-three million, two hundred forty-six thousand, four hundred seventy-three".