1265830 has 8 divisors (see below), whose sum is σ = 2278512. Its totient is φ = 506328.

The previous prime is 1265827. The next prime is 1265843. The reversal of 1265830 is 385621.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1265795 and 1265804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63282 + ... + 63301.

It is an arithmetic number, because the mean of its divisors is an integer number (284814).

2^1265830 is an apocalyptic number.

1265830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1265830 is a deficient number, since it is larger than the sum of its proper divisors (1012682).

1265830 is a wasteful number, since it uses less digits than its factorization.

1265830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126590.

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

The square root of 1265830 is about 1125.0911074220. The cubic root of 1265830 is about 108.1745576782.

The spelling of 1265830 in words is "one million, two hundred sixty-five thousand, eight hundred thirty".