1020265 has 8 divisors (see below), whose sum is σ = 1229760. Its totient is φ = 812592.

The previous prime is 1020259. The next prime is 1020269. The reversal of 1020265 is 5620201.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1020265 - 2⁵ = 1020233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020269) 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, 1852 + ... + 2338.

It is an arithmetic number, because the mean of its divisors is an integer number (153720).

2^1020265 is an apocalyptic number.

It is an amenable number.

1020265 is a deficient number, since it is larger than the sum of its proper divisors (209495).

1020265 is an equidigital number, since it uses as much as digits as its factorization.

1020265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1020265 is about 1010.0816798655. The cubic root of 1020265 is about 100.6709876854.

Adding to 1020265 its reverse (5620201), we get a palindrome (6640466).

The spelling of 1020265 in words is "one million, twenty thousand, two hundred sixty-five".