1242001228 has 12 divisors (see below), whose sum is σ = 2340694720. Its totient is φ = 573231312.

The previous prime is 1242001171. The next prime is 1242001231. The reversal of 1242001228 is 8221002421.

It is a junction number, because it is equal to n+sod(n) for n = 1242001199 and 1242001208.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11942268 + ... + 11942371.

Almost surely, 2^1242001228 is an apocalyptic number.

It is an amenable number.

1242001228 is a deficient number, since it is larger than the sum of its proper divisors (1098693492).

1242001228 is a wasteful number, since it uses less digits than its factorization.

1242001228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23884656 (or 23884654 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 1242001228 is about 35242.0377957915. The cubic root of 1242001228 is about 1074.9147155706.

Adding to 1242001228 its reverse (8221002421), we get a palindrome (9463003649).

The spelling of 1242001228 in words is "one billion, two hundred forty-two million, one thousand, two hundred twenty-eight".