1260385 has 8 divisors (see below), whose sum is σ = 1728576. Its totient is φ = 864240.

The previous prime is 1260383. The next prime is 1260401. The reversal of 1260385 is 5830621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1260385 - 2¹ = 1260383 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1260383) 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 7 ways as a sum of consecutive naturals, for example, 17971 + ... + 18040.

It is an arithmetic number, because the mean of its divisors is an integer number (216072).

2^1260385 is an apocalyptic number.

It is an amenable number.

1260385 is a deficient number, since it is larger than the sum of its proper divisors (468191).

1260385 is an equidigital number, since it uses as much as digits as its factorization.

1260385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36023.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1260385 is about 1122.6686955643. The cubic root of 1260385 is about 108.0192295435.

The spelling of 1260385 in words is "one million, two hundred sixty thousand, three hundred eighty-five".