1272306012 has 12 divisors (see below), whose sum is σ = 2968714056. Its totient is φ = 424102000.

The previous prime is 1272305971. The next prime is 1272306017. The reversal of 1272306012 is 2106032721.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272306017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53012739 + ... + 53012762.

It is an arithmetic number, because the mean of its divisors is an integer number (247392838).

Almost surely, 2^1272306012 is an apocalyptic number.

1272306012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1272306012 is an abundant number, since it is smaller than the sum of its proper divisors (1696408044).

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

1272306012 is a wasteful number, since it uses less digits than its factorization.

1272306012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106025508 (or 106025506 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1272306012 is about 35669.3988174738. The cubic root of 1272306012 is about 1083.5871838942.

Adding to 1272306012 its reverse (2106032721), we get a palindrome (3378338733).

The spelling of 1272306012 in words is "one billion, two hundred seventy-two million, three hundred six thousand, twelve".