748421 has 4 divisors (see below), whose sum is σ = 750252. Its totient is φ = 746592.

The previous prime is 748387. The next prime is 748441. The reversal of 748421 is 124847.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25921 + 722500 = 161^2 + 850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-748421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748441) 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 3 ways as a sum of consecutive naturals, for example, 11 + ... + 1223.

It is an arithmetic number, because the mean of its divisors is an integer number (187563).

2⁷⁴⁸⁴²¹ is an apocalyptic number.

It is an amenable number.

748421 is a deficient number, since it is larger than the sum of its proper divisors (1831).

748421 is a wasteful number, since it uses less digits than its factorization.

748421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830.

The product of its digits is 1792, while the sum is 26.

The square root of 748421 is about 865.1132873792. The cubic root of 748421 is about 90.7922241007.

The spelling of 748421 in words is "seven hundred forty-eight thousand, four hundred twenty-one".