1241086409 has 4 divisors (see below), whose sum is σ = 1241568000. Its totient is φ = 1240604820.

The previous prime is 1241086397. The next prime is 1241086421. The reversal of 1241086409 is 9046801421.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (1241086397) and next prime (1241086421).

It is a cyclic number.

It is not a de Polignac number, because 1241086409 - 2⁴ = 1241086393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1241086439) 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, 236909 + ... + 242090.

It is an arithmetic number, because the mean of its divisors is an integer number (310392000).

Almost surely, 2^1241086409 is an apocalyptic number.

It is an amenable number.

1241086409 is a deficient number, since it is larger than the sum of its proper divisors (481591).

1241086409 is an equidigital number, since it uses as much as digits as its factorization.

1241086409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481590.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 1241086409 is about 35229.0563171936. The cubic root of 1241086409 is about 1074.6507346347.

The spelling of 1241086409 in words is "one billion, two hundred forty-one million, eighty-six thousand, four hundred nine".