1240241133 has 4 divisors (see below), whose sum is σ = 1653654848. Its totient is φ = 826827420.

The previous prime is 1240241129. The next prime is 1240241179. The reversal of 1240241133 is 3311420421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1240241133 - 2² = 1240241129 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 (1240241333) 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, 206706853 + ... + 206706858.

It is an arithmetic number, because the mean of its divisors is an integer number (413413712).

Almost surely, 2^1240241133 is an apocalyptic number.

It is an amenable number.

1240241133 is a deficient number, since it is larger than the sum of its proper divisors (413413715).

1240241133 is an equidigital number, since it uses as much as digits as its factorization.

1240241133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413413714.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1240241133 is about 35217.0574154060. The cubic root of 1240241133 is about 1074.4067057552.

Adding to 1240241133 its reverse (3311420421), we get a palindrome (4551661554).

It can be divided in two parts, 12402 and 41133, that added together give a palindrome (53535).

The spelling of 1240241133 in words is "one billion, two hundred forty million, two hundred forty-one thousand, one hundred thirty-three".