1386442 has 8 divisors (see below), whose sum is σ = 2103300. Its totient is φ = 685344.

The previous prime is 1386419. The next prime is 1386443. The reversal of 1386442 is 2446831.

It can be written as a sum of positive squares in 2 ways, for example, as 1366561 + 19881 = 1169^2 + 141^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1386442.

It is not an unprimeable number, because it can be changed into a prime (1386443) 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, 3717 + ... + 4072.

2^1386442 is an apocalyptic number.

1386442 is a deficient number, since it is larger than the sum of its proper divisors (716858).

1386442 is an equidigital number, since it uses as much as digits as its factorization.

1386442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7880.

The product of its digits is 4608, while the sum is 28.

The square root of 1386442 is about 1177.4727173060. The cubic root of 1386442 is about 111.5065987099.

The spelling of 1386442 in words is "one million, three hundred eighty-six thousand, four hundred forty-two".