1240204343 has 16 divisors (see below), whose sum is σ = 1483937280. Its totient is φ = 1013996256.

The previous prime is 1240204337. The next prime is 1240204363. The reversal of 1240204343 is 3434020421.

It is not a de Polignac number, because 1240204343 - 2⁶ = 1240204279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240204313) 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, 19955 + ... + 53652.

It is an arithmetic number, because the mean of its divisors is an integer number (92746080).

Almost surely, 2^1240204343 is an apocalyptic number.

1240204343 is a deficient number, since it is larger than the sum of its proper divisors (243732937).

1240204343 is an equidigital number, since it uses as much as digits as its factorization.

1240204343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73726.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1240204343 is about 35216.5350794197. The cubic root of 1240204343 is about 1074.3960820648.

Adding to 1240204343 its reverse (3434020421), we get a palindrome (4674224764).

The spelling of 1240204343 in words is "one billion, two hundred forty million, two hundred four thousand, three hundred forty-three".