1272087 has 12 divisors (see below), whose sum is σ = 1847664. Its totient is φ = 843360.

The previous prime is 1272079. The next prime is 1272091. The reversal of 1272087 is 7802721.

It is not a de Polignac number, because 1272087 - 2³ = 1272079 is a prime.

1272087 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1272087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2278 + ... + 2780.

It is an arithmetic number, because the mean of its divisors is an integer number (153972).

2^1272087 is an apocalyptic number.

1272087 is a deficient number, since it is larger than the sum of its proper divisors (575577).

1272087 is a wasteful number, since it uses less digits than its factorization.

1272087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790 (or 787 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 1272087 is about 1127.8683433806. The cubic root of 1272087 is about 108.3525004876.

The spelling of 1272087 in words is "one million, two hundred seventy-two thousand, eighty-seven".