1240206 has 64 divisors (see below), whose sum is σ = 3041280. Its totient is φ = 332640.

The previous prime is 1240199. The next prime is 1240207. The reversal of 1240206 is 6020421.

It is a super-2 number, since 2×1240206² = 3076221844872, which contains 22 as substring.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240207) 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 31 ways as a sum of consecutive naturals, for example, 28821 + ... + 28863.

It is an arithmetic number, because the mean of its divisors is an integer number (47520).

2^1240206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1240206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1520640).

1240206 is an abundant number, since it is smaller than the sum of its proper divisors (1801074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1240206 is a wasteful number, since it uses less digits than its factorization.

1240206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1240206 is about 1113.6453654553. The cubic root of 1240206 is about 107.4396560554.

Adding to 1240206 its reverse (6020421), we get a palindrome (7260627).

The spelling of 1240206 in words is "one million, two hundred forty thousand, two hundred six".