20130743 has 2 divisors, whose sum is σ = 20130744. Its totient is φ = 20130742.

The previous prime is 20130739. The next prime is 20130757. The reversal of 20130743 is 34703102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20130743 - 2² = 20130739 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20130043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065371 + 10065372.

It is an arithmetic number, because the mean of its divisors is an integer number (10065372).

Almost surely, 2^20130743 is an apocalyptic number.

20130743 is a deficient number, since it is larger than the sum of its proper divisors (1).

20130743 is an equidigital number, since it uses as much as digits as its factorization.

20130743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 20130743 is about 4486.7296553280. The cubic root of 20130743 is about 272.0319626150.

Adding to 20130743 its reverse (34703102), we get a palindrome (54833845).

The spelling of 20130743 in words is "twenty million, one hundred thirty thousand, seven hundred forty-three".