1265642 has 8 divisors (see below), whose sum is σ = 2169696. Its totient is φ = 542412.

The previous prime is 1265639. The next prime is 1265653. The reversal of 1265642 is 2465621.

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

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 3 ways as a sum of consecutive naturals, for example, 45188 + ... + 45215.

It is an arithmetic number, because the mean of its divisors is an integer number (271212).

2^1265642 is an apocalyptic number.

1265642 is a deficient number, since it is larger than the sum of its proper divisors (904054).

1265642 is an equidigital number, since it uses as much as digits as its factorization.

1265642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90412.

The product of its digits is 2880, while the sum is 26.

The square root of 1265642 is about 1125.0075555302. The cubic root of 1265642 is about 108.1692020819.

The spelling of 1265642 in words is "one million, two hundred sixty-five thousand, six hundred forty-two".