1224424140 has 48 divisors (see below), whose sum is σ = 3508124928. Its totient is φ = 318919104.

The previous prime is 1224424013. The next prime is 1224424207. The reversal of 1224424140 is 414244221.

It is a super-2 number, since 2×1224424140² = 2998428949229479200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1224424140.

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 15 ways as a sum of consecutive naturals, for example, 234712 + ... + 239871.

It is an arithmetic number, because the mean of its divisors is an integer number (73085936).

Almost surely, 2^1224424140 is an apocalyptic number.

1224424140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1224424140 is an abundant number, since it is smaller than the sum of its proper divisors (2283700788).

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

1224424140 is a wasteful number, since it uses less digits than its factorization.

1224424140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474638 (or 474636 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 1224424140 is about 34991.7724615373. The cubic root of 1224424140 is about 1069.8197908871.

Adding to 1224424140 its reverse (414244221), we get a palindrome (1638668361).

The spelling of 1224424140 in words is "one billion, two hundred twenty-four million, four hundred twenty-four thousand, one hundred forty".