1301265 has 64 divisors (see below), whose sum is σ = 2833920. Its totient is φ = 559872.

The previous prime is 1301257. The next prime is 1301273. The reversal of 1301265 is 5621031.

1301265 = T₂₅₅ + T₂₅₆ + ... + T₂₈₉.

It is an interprime number because it is at equal distance from previous prime (1301257) and next prime (1301273).

It is not a de Polignac number, because 1301265 - 2³ = 1301257 is a prime.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 76537 + ... + 76553.

It is an arithmetic number, because the mean of its divisors is an integer number (44280).

2^1301265 is an apocalyptic number.

1301265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1301265 is an abundant number, since it is smaller than the sum of its proper divisors (1532655).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1301265 is an frugal number, since it uses more digits than its factorization.

1301265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50 (or 32 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1301265 is about 1140.7300294110. The cubic root of 1301265 is about 109.1746771375.

Adding to 1301265 its reverse (5621031), we get a palindrome (6922296).

The spelling of 1301265 in words is "one million, three hundred one thousand, two hundred sixty-five".