1241140405 has 8 divisors (see below), whose sum is σ = 1540726200. Its totient is φ = 958673856.

The previous prime is 1241140391. The next prime is 1241140429. The reversal of 1241140405 is 5040411421.

It can be written as a sum of positive squares in 4 ways, for example, as 237961476 + 1003178929 = 15426^2 + 31673^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1241140405 - 2¹¹ = 1241138357 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4279650 + ... + 4279939.

It is an arithmetic number, because the mean of its divisors is an integer number (192590775).

Almost surely, 2^1241140405 is an apocalyptic number.

It is an amenable number.

1241140405 is a deficient number, since it is larger than the sum of its proper divisors (299585795).

1241140405 is an equidigital number, since it uses as much as digits as its factorization.

1241140405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8559623.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1241140405 is about 35229.8226648957. The cubic root of 1241140405 is about 1074.6663193674. Note that the first 3 decimals are identical.

Adding to 1241140405 its reverse (5040411421), we get a palindrome (6281551826).

The spelling of 1241140405 in words is "one billion, two hundred forty-one million, one hundred forty thousand, four hundred five".