1224342 has 64 divisors (see below), whose sum is σ = 3225600. Its totient is φ = 336960.

The previous prime is 1224337. The next prime is 1224347. The reversal of 1224342 is 2434221.

It is an interprime number because it is at equal distance from previous prime (1224337) and next prime (1224347).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224347) 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, 15459 + ... + 15537.

It is an arithmetic number, because the mean of its divisors is an integer number (50400).

2^1224342 is an apocalyptic number.

It is a pronic number, being equal to 1106×1107.

It is a practical number, because each smaller number is the sum of distinct divisors of 1224342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1612800).

1224342 is an abundant number, since it is smaller than the sum of its proper divisors (2001258).

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

1224342 is a wasteful number, since it uses less digits than its factorization.

1224342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 132 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 1224342 is about 1106.4998870312. The cubic root of 1224342 is about 106.9795867542.

Adding to 1224342 its reverse (2434221), we get a palindrome (3658563).

The spelling of 1224342 in words is "one million, two hundred twenty-four thousand, three hundred forty-two".