1234240013 has 4 divisors (see below), whose sum is σ = 1236241020. Its totient is φ = 1232239008.

The previous prime is 1234240009. The next prime is 1234240061. The reversal of 1234240013 is 3100424321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24730729 + 1209509284 = 4973^2 + 34778^2 .

It is a cyclic number.

It is not a de Polignac number, because 1234240013 - 2² = 1234240009 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 (1234242013) 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, 999578 + ... + 1000811.

It is an arithmetic number, because the mean of its divisors is an integer number (309060255).

Almost surely, 2^1234240013 is an apocalyptic number.

It is an amenable number.

1234240013 is a deficient number, since it is larger than the sum of its proper divisors (2001007).

1234240013 is an equidigital number, since it uses as much as digits as its factorization.

1234240013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001006.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1234240013 is about 35131.7522050922. The cubic root of 1234240013 is about 1072.6710027031.

Adding to 1234240013 its reverse (3100424321), we get a palindrome (4334664334).

The spelling of 1234240013 in words is "one billion, two hundred thirty-four million, two hundred forty thousand, thirteen".