1267506 has 24 divisors (see below), whose sum is σ = 2789904. Its totient is φ = 415800.

The previous prime is 1267501. The next prime is 1267517. The reversal of 1267506 is 6057621.

It is a self number, because there is not a number n which added to its sum of digits gives 1267506.

It is not an unprimeable number, because it can be changed into a prime (1267501) 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, 681 + ... + 1731.

It is an arithmetic number, because the mean of its divisors is an integer number (116246).

2^1267506 is an apocalyptic number.

1267506 is an abundant number, since it is smaller than the sum of its proper divisors (1522398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1267506 is a wasteful number, since it uses less digits than its factorization.

1267506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126 (or 1123 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 1267506 is about 1125.8356896102. The cubic root of 1267506 is about 108.2222788313. Note that the first 4 decimals are identical.

It can be divided in two parts, 126750 and 6, that added together give a triangular number (126756 = T₅₀₃).

The spelling of 1267506 in words is "one million, two hundred sixty-seven thousand, five hundred six".