1245540343 has 12 divisors (see below), whose sum is σ = 1365867360. Its totient is φ = 1131837056.

The previous prime is 1245540341. The next prime is 1245540349. The reversal of 1245540343 is 3430455421.

It is not a de Polignac number, because 1245540343 - 2¹ = 1245540341 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 (1245540341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29263 + ... + 57856.

It is an arithmetic number, because the mean of its divisors is an integer number (113822280).

Almost surely, 2^1245540343 is an apocalyptic number.

1245540343 is a deficient number, since it is larger than the sum of its proper divisors (120327017).

1245540343 is an equidigital number, since it uses as much as digits as its factorization.

1245540343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87194 (or 87165 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 1245540343 is about 35292.2136313380. The cubic root of 1245540343 is about 1075.9347465184.

Adding to 1245540343 its reverse (3430455421), we get a palindrome (4675995764).

The spelling of 1245540343 in words is "one billion, two hundred forty-five million, five hundred forty thousand, three hundred forty-three".