1243002012 has 36 divisors (see below), whose sum is σ = 3373864200. Its totient is φ = 355143264.

The previous prime is 1243002011. The next prime is 1243002017. The reversal of 1243002012 is 2102003421.

It is a junction number, because it is equal to n+sod(n) for n = 1243001982 and 1243002000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243002011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1056387 + ... + 1057562.

It is an arithmetic number, because the mean of its divisors is an integer number (93718450).

Almost surely, 2^1243002012 is an apocalyptic number.

1243002012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1243002012 is an abundant number, since it is smaller than the sum of its proper divisors (2130862188).

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

1243002012 is a wasteful number, since it uses less digits than its factorization.

1243002012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113970 (or 2113961 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1243002012 is about 35256.2336615810. The cubic root of 1243002012 is about 1075.2033542105.

Adding to 1243002012 its reverse (2102003421), we get a palindrome (3345005433).

The spelling of 1243002012 in words is "one billion, two hundred forty-three million, two thousand, twelve".