1290253 has 4 divisors (see below), whose sum is σ = 1294300. Its totient is φ = 1286208.

The previous prime is 1290209. The next prime is 1290257. The reversal of 1290253 is 3520921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3520921 = 17 ⋅207113.

It can be written as a sum of positive squares in 2 ways, for example, as 492804 + 797449 = 702^2 + 893^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1290253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1500 + ... + 2197.

It is an arithmetic number, because the mean of its divisors is an integer number (323575).

2^1290253 is an apocalyptic number.

It is an amenable number.

1290253 is a deficient number, since it is larger than the sum of its proper divisors (4047).

1290253 is an equidigital number, since it uses as much as digits as its factorization.

1290253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4046.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1290253 is about 1135.8930407393. The cubic root of 1290253 is about 108.8658394840.

The spelling of 1290253 in words is "one million, two hundred ninety thousand, two hundred fifty-three".