1272895 has 8 divisors (see below), whose sum is σ = 1645056. Its totient is φ = 939936.

The previous prime is 1272893. The next prime is 1272899. The reversal of 1272895 is 5982721.

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 1272895 - 2¹ = 1272893 is a prime.

It is a Duffinian number.

1272895 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1272895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9727 + ... + 9856.

It is an arithmetic number, because the mean of its divisors is an integer number (205632).

2^1272895 is an apocalyptic number.

1272895 is a deficient number, since it is larger than the sum of its proper divisors (372161).

1272895 is a wasteful number, since it uses less digits than its factorization.

1272895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19601.

The product of its digits is 10080, while the sum is 34.

The square root of 1272895 is about 1128.2264843550. The cubic root of 1272895 is about 108.3754366261.

The spelling of 1272895 in words is "one million, two hundred seventy-two thousand, eight hundred ninety-five".