1273040 has 20 divisors (see below), whose sum is σ = 2960004. Its totient is φ = 509184.

The previous prime is 1273039. The next prime is 1273087. The reversal of 1273040 is 403721.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 760384 + 512656 = 872^2 + 716^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7877 + ... + 8036.

2^1273040 is an apocalyptic number.

1273040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1273040 is an abundant number, since it is smaller than the sum of its proper divisors (1686964).

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

1273040 is a wasteful number, since it uses less digits than its factorization.

1273040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15926 (or 15920 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 1273040 is about 1128.2907426723. The cubic root of 1273040 is about 108.3795516137.

Adding to 1273040 its reverse (403721), we get a palindrome (1676761).

The spelling of 1273040 in words is "one million, two hundred seventy-three thousand, forty".