1272927400000 has 84 divisors (see below), whose sum is σ = 3157255055556. Its totient is φ = 509170880000.

The previous prime is 1272927399979. The next prime is 1272927400007. The reversal of 1272927400000 is 47292721.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1108000443456 + 164926956544 = 1052616^2 + 406112^2 .

It is not an unprimeable number, because it can be changed into a prime (1272927400007) 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, 2982319 + ... + 3382318.

It is an arithmetic number, because the mean of its divisors is an integer number (37586369709).

Almost surely, 2^{1272927400000} is an apocalyptic number.

1272927400000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1272927400000 is an abundant number, since it is smaller than the sum of its proper divisors (1884327655556).

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

1272927400000 is an frugal number, since it uses more digits than its factorization.

1272927400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6364674 (or 6364644 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The spelling of 1272927400000 in words is "one trillion, two hundred seventy-two billion, nine hundred twenty-seven million, four hundred thousand".