1264023 has 18 divisors (see below), whose sum is σ = 1902264. Its totient is φ = 808752.

The previous prime is 1264009. The next prime is 1264027. The reversal of 1264023 is 3204621.

It is a happy number.

1264023 is a `hidden beast` number, since 1 + 2 + 640 + 23 = 666.

It is not a de Polignac number, because 1264023 - 2⁸ = 1263767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1263987 and 1264005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264027) 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 17 ways as a sum of consecutive naturals, for example, 7486 + ... + 7652.

2^1264023 is an apocalyptic number.

1264023 is a deficient number, since it is larger than the sum of its proper divisors (638241).

1264023 is a wasteful number, since it uses less digits than its factorization.

1264023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1264023 is about 1124.2877745488. The cubic root of 1264023 is about 108.1230593167.

Adding to 1264023 its reverse (3204621), we get a palindrome (4468644).

The spelling of 1264023 in words is "one million, two hundred sixty-four thousand, twenty-three".