1267345 has 4 divisors (see below), whose sum is σ = 1520820. Its totient is φ = 1013872.

The previous prime is 1267307. The next prime is 1267349. The reversal of 1267345 is 5437621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 389376 + 877969 = 624^2 + 937^2 .

It is a cyclic number.

It is not a de Polignac number, because 1267345 - 2¹⁵ = 1234577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1267349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126730 + ... + 126739.

It is an arithmetic number, because the mean of its divisors is an integer number (380205).

2^1267345 is an apocalyptic number.

It is an amenable number.

1267345 is a deficient number, since it is larger than the sum of its proper divisors (253475).

1267345 is an equidigital number, since it uses as much as digits as its factorization.

1267345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253474.

The product of its digits is 5040, while the sum is 28.

The square root of 1267345 is about 1125.7641848984. The cubic root of 1267345 is about 108.2176964665.

The spelling of 1267345 in words is "one million, two hundred sixty-seven thousand, three hundred forty-five".