1368442 has 4 divisors (see below), whose sum is σ = 2052666. Its totient is φ = 684220.

The previous prime is 1368439. The next prime is 1368443. The reversal of 1368442 is 2448631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1252161 + 116281 = 1119^2 + 341^2 .

It is an Ulam number.

It is a d-powerful number, because it can be written as 1 + 3¹² + 6⁷ + 8 + 4⁷ + 4⁷ + 2¹⁹ .

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 1368442.

It is not an unprimeable number, because it can be changed into a prime (1368443) 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 as a sum of consecutive naturals, namely, 342109 + ... + 342112.

2^1368442 is an apocalyptic number.

1368442 is a deficient number, since it is larger than the sum of its proper divisors (684224).

1368442 is an equidigital number, since it uses as much as digits as its factorization.

1368442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684223.

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

The square root of 1368442 is about 1169.8042571302. The cubic root of 1368442 is about 111.0219365243.

The spelling of 1368442 in words is "one million, three hundred sixty-eight thousand, four hundred forty-two".