1272915 has 40 divisors (see below), whose sum is σ = 2613600. Its totient is φ = 580608.

The previous prime is 1272913. The next prime is 1272917. The reversal of 1272915 is 5192721.

It is an interprime number because it is at equal distance from previous prime (1272913) and next prime (1272917).

It is not a de Polignac number, because 1272915 - 2¹ = 1272913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1272913) 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 39 ways as a sum of consecutive naturals, for example, 2611 + ... + 3059.

It is an arithmetic number, because the mean of its divisors is an integer number (65340).

2^1272915 is an apocalyptic number.

1272915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1272915 is an abundant number, since it is smaller than the sum of its proper divisors (1340685).

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

1272915 is an equidigital number, since it uses as much as digits as its factorization.

1272915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473 (or 464 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 1272915 is about 1128.2353477887. The cubic root of 1272915 is about 108.3760042291.

It can be divided in two parts, 1272 and 915, that added together give a 7-th power (2187 = 3⁷).

The spelling of 1272915 in words is "one million, two hundred seventy-two thousand, nine hundred fifteen".