1381241 has 4 divisors (see below), whose sum is σ = 1428900. Its totient is φ = 1333584.

The previous prime is 1381231. The next prime is 1381271. The reversal of 1381241 is 1421831.

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 606841 + 774400 = 779^2 + 880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1381241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1381231) 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 3 ways as a sum of consecutive naturals, for example, 23786 + ... + 23843.

It is an arithmetic number, because the mean of its divisors is an integer number (357225).

2^1381241 is an apocalyptic number.

It is an amenable number.

1381241 is a deficient number, since it is larger than the sum of its proper divisors (47659).

1381241 is an equidigital number, since it uses as much as digits as its factorization.

1381241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47658.

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

The square root of 1381241 is about 1175.2620984274. The cubic root of 1381241 is about 111.3669913495.

The spelling of 1381241 in words is "one million, three hundred eighty-one thousand, two hundred forty-one".