1321481 has 12 divisors (see below), whose sum is σ = 1556100. Its totient is φ = 1118880.

The previous prime is 1321477. The next prime is 1321483. The reversal of 1321481 is 1841231.

It can be written as a sum of positive squares in 2 ways, for example, as 67081 + 1254400 = 259^2 + 1120^2 .

It is not a de Polignac number, because 1321481 - 2² = 1321477 is a prime.

It is a super-2 number, since 2×1321481² = 3492624066722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1321483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7211 + ... + 7391.

It is an arithmetic number, because the mean of its divisors is an integer number (129675).

2^1321481 is an apocalyptic number.

It is an amenable number.

1321481 is a deficient number, since it is larger than the sum of its proper divisors (234619).

1321481 is a wasteful number, since it uses less digits than its factorization.

1321481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344 (or 337 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

The square root of 1321481 is about 1149.5568711464. The cubic root of 1321481 is about 109.7371409602.

The spelling of 1321481 in words is "one million, three hundred twenty-one thousand, four hundred eighty-one".