743420 has 12 divisors (see below), whose sum is σ = 1561224. Its totient is φ = 297360.

The previous prime is 743401. The next prime is 743423. The reversal of 743420 is 24347.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 37171 = 743420 / (7 + 4 + 3 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 743392 and 743401.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 743420.

It is not an unprimeable number, because it can be changed into a prime (743423) by changing a digit.

743420 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18566 + ... + 18605.

It is an arithmetic number, because the mean of its divisors is an integer number (130102).

2⁷⁴³⁴²⁰ is an apocalyptic number.

It is an amenable number.

743420 is an abundant number, since it is smaller than the sum of its proper divisors (817804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

743420 is a wasteful number, since it uses less digits than its factorization.

743420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37180 (or 37178 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 743420 is about 862.2180698640. The cubic root of 743420 is about 90.5895453860.

Adding to 743420 its reverse (24347), we get a palindrome (767767).

The spelling of 743420 in words is "seven hundred forty-three thousand, four hundred twenty", and thus it is an iban number.