743435421 has 16 divisors (see below), whose sum is σ = 998339520. Its totient is φ = 492088320.

The previous prime is 743435419. The next prime is 743435443. The reversal of 743435421 is 124534347.

It is not a de Polignac number, because 743435421 - 2¹ = 743435419 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (743435491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409606 + ... + 411416.

It is an arithmetic number, because the mean of its divisors is an integer number (62396220).

Almost surely, 2^743435421 is an apocalyptic number.

It is an amenable number.

743435421 is a deficient number, since it is larger than the sum of its proper divisors (254904099).

743435421 is a wasteful number, since it uses less digits than its factorization.

743435421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2716.

The product of its digits is 40320, while the sum is 33.

The square root of 743435421 is about 27266.0121946720. The cubic root of 743435421 is about 905.9017175768.

Adding to 743435421 its reverse (124534347), we get a palindrome (867969768).

The spelling of 743435421 in words is "seven hundred forty-three million, four hundred thirty-five thousand, four hundred twenty-one".