1242223984 has 20 divisors (see below), whose sum is σ = 2408537560. Its totient is φ = 620665920.

The previous prime is 1242223979. The next prime is 1242223987. The reversal of 1242223984 is 4893222421.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242223987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4302 + ... + 50029.

It is an arithmetic number, because the mean of its divisors is an integer number (120426878).

Almost surely, 2^1242223984 is an apocalyptic number.

It is an amenable number.

1242223984 is a deficient number, since it is larger than the sum of its proper divisors (1166313576).

1242223984 is a wasteful number, since it uses less digits than its factorization.

1242223984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55768 (or 55762 counting only the distinct ones).

The product of its digits is 55296, while the sum is 37.

The square root of 1242223984 is about 35245.1980275328. The cubic root of 1242223984 is about 1074.9789746023.

The spelling of 1242223984 in words is "one billion, two hundred forty-two million, two hundred twenty-three thousand, nine hundred eighty-four".