881421 has 8 divisors (see below), whose sum is σ = 1181280. Its totient is φ = 584592.

The previous prime is 881417. The next prime is 881437. The reversal of 881421 is 124188.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 881421 - 2² = 881417 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 881391 and 881400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881411) 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 7 ways as a sum of consecutive naturals, for example, 46 + ... + 1328.

It is an arithmetic number, because the mean of its divisors is an integer number (147660).

2⁸⁸¹⁴²¹ is an apocalyptic number.

It is an amenable number.

881421 is a deficient number, since it is larger than the sum of its proper divisors (299859).

881421 is a wasteful number, since it uses less digits than its factorization.

881421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515.

The product of its digits is 512, while the sum is 24.

The square root of 881421 is about 938.8402420007. The cubic root of 881421 is about 95.8799497633.

The spelling of 881421 in words is "eight hundred eighty-one thousand, four hundred twenty-one".