1224305140 has 12 divisors (see below), whose sum is σ = 2571040836. Its totient is φ = 489722048.

The previous prime is 1224305083. The next prime is 1224305153. The reversal of 1224305140 is 415034221.

It can be written as a sum of positive squares in 2 ways, for example, as 237591396 + 986713744 = 15414^2 + 31412^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 30607609 + ... + 30607648.

It is an arithmetic number, because the mean of its divisors is an integer number (214253403).

Almost surely, 2^1224305140 is an apocalyptic number.

1224305140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1224305140 is an abundant number, since it is smaller than the sum of its proper divisors (1346735696).

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

1224305140 is a wasteful number, since it uses less digits than its factorization.

1224305140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61215266 (or 61215264 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1224305140 is about 34990.0720205032. The cubic root of 1224305140 is about 1069.7851316882.

Adding to 1224305140 its reverse (415034221), we get a palindrome (1639339361).

The spelling of 1224305140 in words is "one billion, two hundred twenty-four million, three hundred five thousand, one hundred forty".