743266021 has 2 divisors, whose sum is σ = 743266022. Its totient is φ = 743266020.

The previous prime is 743266003. The next prime is 743266031. The reversal of 743266021 is 120662347.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 494573121 + 248692900 = 22239^2 + 15770^2 .

It is a cyclic number.

It is not a de Polignac number, because 743266021 - 2¹¹ = 743263973 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 (743266001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371633010 + 371633011.

It is an arithmetic number, because the mean of its divisors is an integer number (371633011).

Almost surely, 2^743266021 is an apocalyptic number.

It is an amenable number.

743266021 is a deficient number, since it is larger than the sum of its proper divisors (1).

743266021 is an equidigital number, since it uses as much as digits as its factorization.

743266021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 743266021 is about 27262.9055861623. The cubic root of 743266021 is about 905.8329057679.

The spelling of 743266021 in words is "seven hundred forty-three million, two hundred sixty-six thousand, twenty-one".