1267139 has 8 divisors (see below), whose sum is σ = 1358880. Its totient is φ = 1178496.

The previous prime is 1267127. The next prime is 1267151. The reversal of 1267139 is 9317621.

It is an interprime number because it is at equal distance from previous prime (1267127) and next prime (1267151).

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 1267139 - 2⁸ = 1266883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1267109) 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 7 ways as a sum of consecutive naturals, for example, 107 + ... + 1595.

It is an arithmetic number, because the mean of its divisors is an integer number (169860).

2^1267139 is an apocalyptic number.

1267139 is a deficient number, since it is larger than the sum of its proper divisors (91741).

1267139 is a wasteful number, since it uses less digits than its factorization.

1267139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549.

The product of its digits is 2268, while the sum is 29.

The square root of 1267139 is about 1125.6726877738. The cubic root of 1267139 is about 108.2118327505.

The spelling of 1267139 in words is "one million, two hundred sixty-seven thousand, one hundred thirty-nine".