1272605 has 8 divisors (see below), whose sum is σ = 1536000. Its totient is φ = 1012176.

The previous prime is 1272589. The next prime is 1272617. The reversal of 1272605 is 5062721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1272605 - 2⁴ = 1272589 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356 + ... + 1634.

It is an arithmetic number, because the mean of its divisors is an integer number (192000).

2^1272605 is an apocalyptic number.

It is an amenable number.

1272605 is a deficient number, since it is larger than the sum of its proper divisors (263395).

1272605 is a wasteful number, since it uses less digits than its factorization.

1272605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 1272605 is about 1128.0979567396. The cubic root of 1272605 is about 108.3672057131.

The spelling of 1272605 in words is "one million, two hundred seventy-two thousand, six hundred five".