1386241 has 4 divisors (see below), whose sum is σ = 1390932. Its totient is φ = 1381552.

The previous prime is 1386239. The next prime is 1386263. The reversal of 1386241 is 1426831.

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 378225 + 1008016 = 615^2 + 1004^2 .

It is a cyclic number.

It is not a de Polignac number, because 1386241 - 2¹ = 1386239 is a prime.

It is a super-2 number, since 2×1386241² = 3843328220162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1386211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1870 + ... + 2503.

It is an arithmetic number, because the mean of its divisors is an integer number (347733).

2^1386241 is an apocalyptic number.

It is an amenable number.

1386241 is a deficient number, since it is larger than the sum of its proper divisors (4691).

1386241 is an equidigital number, since it uses as much as digits as its factorization.

1386241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4690.

The product of its digits is 1152, while the sum is 25.

The square root of 1386241 is about 1177.3873619162. The cubic root of 1386241 is about 111.5012098778.

The spelling of 1386241 in words is "one million, three hundred eighty-six thousand, two hundred forty-one".