738421 has 2 divisors, whose sum is σ = 738422. Its totient is φ = 738420.

The previous prime is 738403. The next prime is 738443. The reversal of 738421 is 124837.

738421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 731025 + 7396 = 855^2 + 86^2 .

It is a cyclic number.

It is not a de Polignac number, because 738421 - 2¹⁷ = 607349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (738401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369210 + 369211.

It is an arithmetic number, because the mean of its divisors is an integer number (369211).

2⁷³⁸⁴²¹ is an apocalyptic number.

It is an amenable number.

738421 is a deficient number, since it is larger than the sum of its proper divisors (1).

738421 is an equidigital number, since it uses as much as digits as its factorization.

738421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 25.

The square root of 738421 is about 859.3142614899. The cubic root of 738421 is about 90.3860372749.

The spelling of 738421 in words is "seven hundred thirty-eight thousand, four hundred twenty-one".