842481 has 12 divisors (see below), whose sum is σ = 1262352. Its totient is φ = 561492.

The previous prime is 842477. The next prime is 842483. The reversal of 842481 is 184248.

It is not a de Polignac number, because 842481 - 2² = 842477 is a prime.

It is a super-2 number, since 2×842481² = 1419548470722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

842481 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 842481.

It is not an unprimeable number, because it can be changed into a prime (842483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1491 + ... + 1976.

It is an arithmetic number, because the mean of its divisors is an integer number (105196).

2⁸⁴²⁴⁸¹ is an apocalyptic number.

842481 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

842481 is a deficient number, since it is larger than the sum of its proper divisors (419871).

842481 is an equidigital number, since it uses as much as digits as its factorization.

842481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3482 (or 3470 counting only the distinct ones).

The product of its digits is 2048, while the sum is 27.

The square root of 842481 is about 917.8676375164. The cubic root of 842481 is about 94.4466819411.

The spelling of 842481 in words is "eight hundred forty-two thousand, four hundred eighty-one".