1275340 has 72 divisors (see below), whose sum is σ = 3217536. Its totient is φ = 422400.

The previous prime is 1275319. The next prime is 1275341. The reversal of 1275340 is 435721.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1275341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41125 + ... + 41155.

It is an arithmetic number, because the mean of its divisors is an integer number (44688).

2^1275340 is an apocalyptic number.

1275340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1275340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1608768).

1275340 is an abundant number, since it is smaller than the sum of its proper divisors (1942196).

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

1275340 is a wasteful number, since it uses less digits than its factorization.

1275340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 1275340 is about 1129.3095235585. The cubic root of 1275340 is about 108.4447820854. Note that the first 3 decimals are identical.

1275340 divided by its sum of digits (22) gives a triangular number (57970 = T₃₄₀).

The spelling of 1275340 in words is "one million, two hundred seventy-five thousand, three hundred forty".