1240366 has 4 divisors (see below), whose sum is σ = 1860552. Its totient is φ = 620182.

The previous prime is 1240363. The next prime is 1240387. The reversal of 1240366 is 6630421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6630421 = 7 ⋅947203.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310090 + ... + 310093.

It is an arithmetic number, because the mean of its divisors is an integer number (465138).

2^1240366 is an apocalyptic number.

1240366 is a deficient number, since it is larger than the sum of its proper divisors (620186).

1240366 is an equidigital number, since it uses as much as digits as its factorization.

1240366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620185.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1240366 is about 1113.7171992925. The cubic root of 1240366 is about 107.4442761496. Note that the first 3 decimals are identical.

Adding to 1240366 its reverse (6630421), we get a palindrome (7870787).

The spelling of 1240366 in words is "one million, two hundred forty thousand, three hundred sixty-six".