1264375 has 30 divisors (see below), whose sum is σ = 1918136. Its totient is φ = 816000.

The previous prime is 1264363. The next prime is 1264387. The reversal of 1264375 is 5734621.

It is an interprime number because it is at equal distance from previous prime (1264363) and next prime (1264387).

It is not a de Polignac number, because 1264375 - 2⁹ = 1263863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 74367 + ... + 74383.

2^1264375 is an apocalyptic number.

1264375 is a deficient number, since it is larger than the sum of its proper divisors (653761).

1264375 is an frugal number, since it uses more digits than its factorization.

1264375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61 (or 29 counting only the distinct ones).

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

The square root of 1264375 is about 1124.4443072025. Note that the first 3 decimals coincide. The cubic root of 1264375 is about 108.1330949423.

Multiplying 1264375 by its sum of digits (28), we get a square (35402500 = 5950²).

Adding to 1264375 its reverse (5734621), we get a palindrome (6998996).

The spelling of 1264375 in words is "one million, two hundred sixty-four thousand, three hundred seventy-five".