1241002405 has 4 divisors (see below), whose sum is σ = 1489202892. Its totient is φ = 992801920.

The previous prime is 1241002349. The next prime is 1241002439. The reversal of 1241002405 is 5042001421.

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 233447841 + 1007554564 = 15279^2 + 31742^2 .

It is not a de Polignac number, because 1241002405 - 2⁷ = 1241002277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124100236 + ... + 124100245.

It is an arithmetic number, because the mean of its divisors is an integer number (372300723).

Almost surely, 2^1241002405 is an apocalyptic number.

It is an amenable number.

1241002405 is a deficient number, since it is larger than the sum of its proper divisors (248200487).

1241002405 is an equidigital number, since it uses as much as digits as its factorization.

1241002405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248200486.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1241002405 is about 35227.8640425445. The cubic root of 1241002405 is about 1074.6264878682.

Adding to 1241002405 its reverse (5042001421), we get a palindrome (6283003826).

The spelling of 1241002405 in words is "one billion, two hundred forty-one million, two thousand, four hundred five".