1264135 has 4 divisors (see below), whose sum is σ = 1516968. Its totient is φ = 1011304.

The previous prime is 1264129. The next prime is 1264177. The reversal of 1264135 is 5314621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5314621 = 13 ⋅408817.

It is a cyclic number.

It is not a de Polignac number, because 1264135 - 2¹¹ = 1262087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126409 + ... + 126418.

It is an arithmetic number, because the mean of its divisors is an integer number (379242).

2^1264135 is an apocalyptic number.

1264135 is a deficient number, since it is larger than the sum of its proper divisors (252833).

1264135 is an equidigital number, since it uses as much as digits as its factorization.

1264135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252832.

The product of its digits is 720, while the sum is 22.

The square root of 1264135 is about 1124.3375827571. The cubic root of 1264135 is about 108.1262526724.

Adding to 1264135 its reverse (5314621), we get a palindrome (6578756).

The spelling of 1264135 in words is "one million, two hundred sixty-four thousand, one hundred thirty-five".