1240396 has 18 divisors (see below), whose sum is σ = 2293620. Its totient is φ = 586872.

The previous prime is 1240391. The next prime is 1240399. The reversal of 1240396 is 6930421.

1240396 is a modest number, since divided by 396 gives 124 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 1240396.

It is not an unprimeable number, because it can be changed into a prime (1240391) 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 5 ways as a sum of consecutive naturals, for example, 1015 + ... + 1873.

2^1240396 is an apocalyptic number.

It is an amenable number.

1240396 is a deficient number, since it is larger than the sum of its proper divisors (1053224).

1240396 is a wasteful number, since it uses less digits than its factorization.

1240396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901 (or 880 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1240396 is about 1113.7306676212. The cubic root of 1240396 is about 107.4451423731.

Adding to 1240396 its sum of digits (25), we get a palindrome (1240421).

The spelling of 1240396 in words is "one million, two hundred forty thousand, three hundred ninety-six".