1224665442 has 288 divisors, whose sum is σ = 3708746496. Its totient is φ = 283979520.

The previous prime is 1224665423. The next prime is 1224665459. The reversal of 1224665442 is 2445664221.

Its product of digits (92160) is a multiple of the sum of its prime divisors (240).

It is a junction number, because it is equal to n+sod(n) for n = 1224665397 and 1224665406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 7333243 + ... + 7333409.

It is an arithmetic number, because the mean of its divisors is an integer number (12877592).

Almost surely, 2^1224665442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1224665442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1854373248).

1224665442 is an abundant number, since it is smaller than the sum of its proper divisors (2484081054).

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

1224665442 is a wasteful number, since it uses less digits than its factorization.

1224665442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 240 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 1224665442 is about 34995.2202736317. The cubic root of 1224665442 is about 1069.8900641120.

It can be divided in two parts, 1224 and 665442, that added together give a palindrome (666666).

The spelling of 1224665442 in words is "one billion, two hundred twenty-four million, six hundred sixty-five thousand, four hundred forty-two".