1264047 has 4 divisors (see below), whose sum is σ = 1685400. Its totient is φ = 842696.

The previous prime is 1264037. The next prime is 1264049. The reversal of 1264047 is 7404621.

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

It is a cyclic number.

It is not a de Polignac number, because 1264047 - 2¹⁴ = 1247663 is a prime.

It is a D-number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264049) 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, 210672 + ... + 210677.

It is an arithmetic number, because the mean of its divisors is an integer number (421350).

2^1264047 is an apocalyptic number.

1264047 is a deficient number, since it is larger than the sum of its proper divisors (421353).

1264047 is an equidigital number, since it uses as much as digits as its factorization.

1264047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421352.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 1264047 is about 1124.2984479221. The cubic root of 1264047 is about 108.1237436231.

Adding to 1264047 its reverse (7404621), we get a palindrome (8668668).

The spelling of 1264047 in words is "one million, two hundred sixty-four thousand, forty-seven".