1245343 has 4 divisors (see below), whose sum is σ = 1358568. Its totient is φ = 1132120.

The previous prime is 1245331. The next prime is 1245353. The reversal of 1245343 is 3435421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3435421 = 11 ⋅312311.

It is not a de Polignac number, because 1245343 - 2¹³ = 1237151 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 (1245353) 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, 56596 + ... + 56617.

It is an arithmetic number, because the mean of its divisors is an integer number (339642).

2^1245343 is an apocalyptic number.

1245343 is the 597-th centered heptagonal number.

1245343 is a deficient number, since it is larger than the sum of its proper divisors (113225).

1245343 is a wasteful number, since it uses less digits than its factorization.

1245343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113224.

The product of its digits is 1440, while the sum is 22.

The square root of 1245343 is about 1115.9493716115. The cubic root of 1245343 is about 107.5877919935.

The spelling of 1245343 in words is "one million, two hundred forty-five thousand, three hundred forty-three".