1242424 has 8 divisors (see below), whose sum is σ = 2329560. Its totient is φ = 621208.

The previous prime is 1242421. The next prime is 1242457. The reversal of 1242424 is 4242421.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242421) 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 as a sum of consecutive naturals, namely, 77644 + ... + 77659.

It is an arithmetic number, because the mean of its divisors is an integer number (291195).

2^1242424 is an apocalyptic number.

It is an amenable number.

1242424 is a deficient number, since it is larger than the sum of its proper divisors (1087136).

1242424 is a wasteful number, since it uses less digits than its factorization.

1242424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155309 (or 155305 counting only the distinct ones).

The product of its digits is 512, while the sum is 19.

The square root of 1242424 is about 1114.6407493000. The cubic root of 1242424 is about 107.5036667219.

Adding to 1242424 its reverse (4242421), we get a palindrome (5484845).

It can be divided in two parts, 12 and 42424, that added together give a square (42436 = 206²).

The spelling of 1242424 in words is "one million, two hundred forty-two thousand, four hundred twenty-four".