874421 has 4 divisors (see below), whose sum is σ = 898092. Its totient is φ = 850752.

The previous prime is 874409. The next prime is 874427. The reversal of 874421 is 124478.

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 790321 + 84100 = 889^2 + 290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-874421 is a prime.

It is a super-2 number, since 2×874421² = 1529224170482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (874427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11780 + ... + 11853.

It is an arithmetic number, because the mean of its divisors is an integer number (224523).

2⁸⁷⁴⁴²¹ is an apocalyptic number.

It is an amenable number.

874421 is a deficient number, since it is larger than the sum of its proper divisors (23671).

874421 is a wasteful number, since it uses less digits than its factorization.

874421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23670.

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

The square root of 874421 is about 935.1048069602. The cubic root of 874421 is about 95.6254575853.

Adding to 874421 its reverse (124478), we get a palindrome (998899).

The spelling of 874421 in words is "eight hundred seventy-four thousand, four hundred twenty-one".