1279340 has 24 divisors (see below), whose sum is σ = 2745792. Its totient is φ = 500480.

The previous prime is 1279337. The next prime is 1279357. The reversal of 1279340 is 439721.

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, 260 + ... + 1620.

It is an arithmetic number, because the mean of its divisors is an integer number (114408).

2^1279340 is an apocalyptic number.

1279340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1279340 is an abundant number, since it is smaller than the sum of its proper divisors (1466452).

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

1279340 is a wasteful number, since it uses less digits than its factorization.

1279340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417 (or 1415 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 1279340 is about 1131.0791307420. The cubic root of 1279340 is about 108.5580398343.

The spelling of 1279340 in words is "one million, two hundred seventy-nine thousand, three hundred forty".