1240413043 has 4 divisors (see below), whose sum is σ = 1305697960. Its totient is φ = 1175128128.

The previous prime is 1240413037. The next prime is 1240413059. The reversal of 1240413043 is 3403140421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1240413043 - 2²¹ = 1238315891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240411043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32642430 + ... + 32642467.

It is an arithmetic number, because the mean of its divisors is an integer number (326424490).

Almost surely, 2^1240413043 is an apocalyptic number.

1240413043 is a deficient number, since it is larger than the sum of its proper divisors (65284917).

1240413043 is an equidigital number, since it uses as much as digits as its factorization.

1240413043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65284916.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1240413043 is about 35219.4980515055. The cubic root of 1240413043 is about 1074.4563446839.

Adding to 1240413043 its reverse (3403140421), we get a palindrome (4643553464).

The spelling of 1240413043 in words is "one billion, two hundred forty million, four hundred thirteen thousand, forty-three".