1253343 has 16 divisors (see below), whose sum is σ = 2057216. Its totient is φ = 660960.

The previous prime is 1253333. The next prime is 1253347. The reversal of 1253343 is 3433521.

It is not a de Polignac number, because 1253343 - 2⁴ = 1253327 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

1253343 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2023 + ... + 2568.

It is an arithmetic number, because the mean of its divisors is an integer number (128576).

2^1253343 is an apocalyptic number.

1253343 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1253343 is a deficient number, since it is larger than the sum of its proper divisors (803873).

1253343 is a wasteful number, since it uses less digits than its factorization.

1253343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4614.

The product of its digits is 1080, while the sum is 21.

The square root of 1253343 is about 1119.5280255536. The cubic root of 1253343 is about 107.8176793563.

Adding to 1253343 its reverse (3433521), we get a palindrome (4686864).

It can be divided in two parts, 1253 and 343, that added together give a triangular number (1596 = T₅₆).

The spelling of 1253343 in words is "one million, two hundred fifty-three thousand, three hundred forty-three".