743716421 has 8 divisors (see below), whose sum is σ = 850498944. Its totient is φ = 637068240.

The previous prime is 743716387. The next prime is 743716439. The reversal of 743716421 is 124617347.

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 743716421 - 2¹⁰ = 743715397 is a prime.

It is a super-2 number, since 2×743716421² = 1106228229730098482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (743716321) 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 in 7 ways as a sum of consecutive naturals, for example, 21425 + ... + 44118.

It is an arithmetic number, because the mean of its divisors is an integer number (106312368).

Almost surely, 2^743716421 is an apocalyptic number.

It is an amenable number.

743716421 is a deficient number, since it is larger than the sum of its proper divisors (106782523).

743716421 is a wasteful number, since it uses less digits than its factorization.

743716421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67171.

The product of its digits is 28224, while the sum is 35.

The square root of 743716421 is about 27271.1646432638. The cubic root of 743716421 is about 906.0158392655.

The spelling of 743716421 in words is "seven hundred forty-three million, seven hundred sixteen thousand, four hundred twenty-one".