1243042212 has 24 divisors (see below), whose sum is σ = 2908345216. Its totient is φ = 413216928.

The previous prime is 1243042211. The next prime is 1243042217. The reversal of 1243042212 is 2122403421.

It is not an unprimeable number, because it can be changed into a prime (1243042211) 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 7 ways as a sum of consecutive naturals, for example, 136723 + ... + 145530.

Almost surely, 2^1243042212 is an apocalyptic number.

1243042212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1243042212 is an abundant number, since it is smaller than the sum of its proper divisors (1665303004).

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

1243042212 is a wasteful number, since it uses less digits than its factorization.

1243042212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282627 (or 282625 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1243042212 is about 35256.8037689181. The cubic root of 1243042212 is about 1075.2149451568.

Adding to 1243042212 its reverse (2122403421), we get a palindrome (3365445633).

The spelling of 1243042212 in words is "one billion, two hundred forty-three million, forty-two thousand, two hundred twelve".