743316421 has 8 divisors (see below), whose sum is σ = 779650560. Its totient is φ = 707837328.

The previous prime is 743316389. The next prime is 743316437. The reversal of 743316421 is 124613347.

743316421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 743316421 - 2⁵ = 743316389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (743316491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211981 + ... + 215458.

It is an arithmetic number, because the mean of its divisors is an integer number (97456320).

Almost surely, 2^743316421 is an apocalyptic number.

It is an amenable number.

743316421 is a deficient number, since it is larger than the sum of its proper divisors (36334139).

743316421 is a wasteful number, since it uses less digits than its factorization.

743316421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427523.

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

The square root of 743316421 is about 27263.8299033720. The cubic root of 743316421 is about 905.8533797953.

Adding to 743316421 its reverse (124613347), we get a palindrome (867929768).

The spelling of 743316421 in words is "seven hundred forty-three million, three hundred sixteen thousand, four hundred twenty-one".