1242404 has 12 divisors (see below), whose sum is σ = 2191728. Its totient is φ = 616200.

The previous prime is 1242403. The next prime is 1242407. The reversal of 1242404 is 4042421.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1242403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 662 + ... + 1709.

It is an arithmetic number, because the mean of its divisors is an integer number (182644).

2^1242404 is an apocalyptic number.

It is an amenable number.

1242404 is a deficient number, since it is larger than the sum of its proper divisors (949324).

1242404 is a wasteful number, since it uses less digits than its factorization.

1242404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506 (or 2504 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 1242404 is about 1114.6317777634. The cubic root of 1242404 is about 107.5030898697.

Adding to 1242404 its sum of digits (17), we get a palindrome (1242421).

Adding to 1242404 its reverse (4042421), we get a palindrome (5284825).

The spelling of 1242404 in words is "one million, two hundred forty-two thousand, four hundred four".