1267945 has 16 divisors (see below), whose sum is σ = 1842048. Its totient is φ = 817920.

The previous prime is 1267943. The next prime is 1267951. The reversal of 1267945 is 5497621.

It is not a de Polignac number, because 1267945 - 2¹ = 1267943 is a prime.

It is a Duffinian number.

Its product of digits (15120) is a multiple of the sum of its prime divisors (2160).

1267945 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1267945.

It is not an unprimeable number, because it can be changed into a prime (1267943) 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 15 ways as a sum of consecutive naturals, for example, 471 + ... + 1660.

It is an arithmetic number, because the mean of its divisors is an integer number (115128).

2^1267945 is an apocalyptic number.

It is an amenable number.

1267945 is a deficient number, since it is larger than the sum of its proper divisors (574103).

1267945 is a wasteful number, since it uses less digits than its factorization.

1267945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160.

The product of its digits is 15120, while the sum is 34.

The square root of 1267945 is about 1126.0306390148. The cubic root of 1267945 is about 108.2347716312.

The spelling of 1267945 in words is "one million, two hundred sixty-seven thousand, nine hundred forty-five".