1240401 has 8 divisors (see below), whose sum is σ = 1668960. Its totient is φ = 819392.

The previous prime is 1240399. The next prime is 1240423. The reversal of 1240401 is 1040421.

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

It is a cyclic number.

It is not a de Polignac number, because 1240401 - 2¹ = 1240399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1244401) 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 7 ways as a sum of consecutive naturals, for example, 1491 + ... + 2168.

It is an arithmetic number, because the mean of its divisors is an integer number (208620).

2^1240401 is an apocalyptic number.

It is an amenable number.

1240401 is a deficient number, since it is larger than the sum of its proper divisors (428559).

1240401 is a wasteful number, since it uses less digits than its factorization.

1240401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3775.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1240401 is about 1113.7329123268. The cubic root of 1240401 is about 107.4452867423.

Adding to 1240401 its reverse (1040421), we get a palindrome (2280822).

The spelling of 1240401 in words is "one million, two hundred forty thousand, four hundred one".