1383121 has 2 divisors, whose sum is σ = 1383122. Its totient is φ = 1383120.

The previous prime is 1383113. The next prime is 1383139. The reversal of 1383121 is 1213831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1299600 + 83521 = 1140^2 + 289^2 .

It is a cyclic number.

It is not a de Polignac number, because 1383121 - 2³ = 1383113 is a prime.

It is equal to p₁₀₅₉₀₄ and since 1383121 and 105904 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1383191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 691560 + 691561.

It is an arithmetic number, because the mean of its divisors is an integer number (691561).

2^1383121 is an apocalyptic number.

It is an amenable number.

1383121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1383121 is an equidigital number, since it uses as much as digits as its factorization.

1383121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 19.

The square root of 1383121 is about 1176.0616480440. The cubic root of 1383121 is about 111.4174954552.

Adding to 1383121 its reverse (1213831), we get a palindrome (2596952).

The spelling of 1383121 in words is "one million, three hundred eighty-three thousand, one hundred twenty-one".