734421 has 16 divisors (see below), whose sum is σ = 1036800. Its totient is φ = 461760.

The previous prime is 734411. The next prime is 734423. The reversal of 734421 is 124437.

It is not a de Polignac number, because 734421 - 2⁵ = 734389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (734423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4855 + ... + 5003.

It is an arithmetic number, because the mean of its divisors is an integer number (64800).

2⁷³⁴⁴²¹ is an apocalyptic number.

It is an amenable number.

734421 is a deficient number, since it is larger than the sum of its proper divisors (302379).

734421 is a wasteful number, since it uses less digits than its factorization.

734421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236.

The product of its digits is 672, while the sum is 21.

The square root of 734421 is about 856.9836637883. The cubic root of 734421 is about 90.2225357202. Note that the first 3 decimals are identical.

Adding to 734421 its reverse (124437), we get a palindrome (858858).

The spelling of 734421 in words is "seven hundred thirty-four thousand, four hundred twenty-one".