1272409604 has 12 divisors (see below), whose sum is σ = 2238021324. Its totient is φ = 632974944.

The previous prime is 1272409583. The next prime is 1272409631. The reversal of 1272409604 is 4069042721.

It can be written as a sum of positive squares in 2 ways, for example, as 761649604 + 510760000 = 27598^2 + 22600^2 .

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, 806579 + ... + 808154.

It is an arithmetic number, because the mean of its divisors is an integer number (186501777).

Almost surely, 2^1272409604 is an apocalyptic number.

It is an amenable number.

1272409604 is a deficient number, since it is larger than the sum of its proper divisors (965611720).

1272409604 is a wasteful number, since it uses less digits than its factorization.

1272409604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614934 (or 1614932 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 1272409604 is about 35670.8509009808. The cubic root of 1272409604 is about 1083.6165918920.

The spelling of 1272409604 in words is "one billion, two hundred seventy-two million, four hundred nine thousand, six hundred four".