1241344021 has 4 divisors (see below), whose sum is σ = 1244440044. Its totient is φ = 1238248000.

The previous prime is 1241344019. The next prime is 1241344031. The reversal of 1241344021 is 1204431421.

It is a happy number.

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 1143116100 + 98227921 = 33810^2 + 9911^2 .

It is a cyclic number.

It is not a de Polignac number, because 1241344021 - 2¹ = 1241344019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1241343983 and 1241344001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241344001) 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, 1547410 + ... + 1548211.

It is an arithmetic number, because the mean of its divisors is an integer number (311110011).

Almost surely, 2^1241344021 is an apocalyptic number.

It is an amenable number.

1241344021 is a deficient number, since it is larger than the sum of its proper divisors (3096023).

1241344021 is an equidigital number, since it uses as much as digits as its factorization.

1241344021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3096022.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1241344021 is about 35232.7123707500. The cubic root of 1241344021 is about 1074.7250844867.

Adding to 1241344021 its reverse (1204431421), we get a palindrome (2445775442).

The spelling of 1241344021 in words is "one billion, two hundred forty-one million, three hundred forty-four thousand, twenty-one".