1241340013 has 4 divisors (see below), whose sum is σ = 1241469180. Its totient is φ = 1241210848.

The previous prime is 1241339993. The next prime is 1241340031. The reversal of 1241340013 is 3100431421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3100431421 = 7523 ⋅412127.

It can be written as a sum of positive squares in 2 ways, for example, as 726140809 + 515199204 = 26947^2 + 22698^2 .

It is a cyclic number.

It is not a de Polignac number, because 1241340013 - 2⁹ = 1241339501 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 (1241340413) 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, 48898 + ... + 69811.

It is an arithmetic number, because the mean of its divisors is an integer number (310367295).

Almost surely, 2^1241340013 is an apocalyptic number.

It is an amenable number.

1241340013 is a deficient number, since it is larger than the sum of its proper divisors (129167).

1241340013 is a wasteful number, since it uses less digits than its factorization.

1241340013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129166.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1241340013 is about 35232.6554917452. The cubic root of 1241340013 is about 1074.7239278096.

Adding to 1241340013 its reverse (3100431421), we get a palindrome (4341771434).

The spelling of 1241340013 in words is "one billion, two hundred forty-one million, three hundred forty thousand, thirteen".