1272285 has 36 divisors (see below), whose sum is σ = 2569788. Its totient is φ = 580608.

The previous prime is 1272283. The next prime is 1272287. The reversal of 1272285 is 5822721.

It is an interprime number because it is at equal distance from previous prime (1272283) and next prime (1272287).

It can be written as a sum of positive squares in 2 ways, for example, as 974169 + 298116 = 987^2 + 546^2 .

It is not a de Polignac number, because 1272285 - 2¹ = 1272283 is a prime.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272281) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 1917 + ... + 2493.

It is an arithmetic number, because the mean of its divisors is an integer number (71383).

2^1272285 is an apocalyptic number.

1272285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1272285 is an abundant number, since it is smaller than the sum of its proper divisors (1297503).

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

1272285 is a wasteful number, since it uses less digits than its factorization.

1272285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 592 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 1272285 is about 1127.9561161676. The cubic root of 1272285 is about 108.3581218752.

The spelling of 1272285 in words is "one million, two hundred seventy-two thousand, two hundred eighty-five".