1281270 has 16 divisors (see below), whose sum is σ = 3075120. Its totient is φ = 341664.

The previous prime is 1281263. The next prime is 1281281. The reversal of 1281270 is 721821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21325 + ... + 21384.

It is an arithmetic number, because the mean of its divisors is an integer number (192195).

2^1281270 is an apocalyptic number.

1281270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1281270 is an abundant number, since it is smaller than the sum of its proper divisors (1793850).

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

1281270 is a wasteful number, since it uses less digits than its factorization.

1281270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42719.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1281270 is about 1131.9319767548. The cubic root of 1281270 is about 108.6126022771.

It can be divided in two parts, 1281 and 270, that added together give a palindrome (1551).

The spelling of 1281270 in words is "one million, two hundred eighty-one thousand, two hundred seventy".