1240204105 has 8 divisors (see below), whose sum is σ = 1700851392. Its totient is φ = 850425648.

The previous prime is 1240204099. The next prime is 1240204123. The reversal of 1240204105 is 5014020421.

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 1240204105 - 2⁷ = 1240203977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17717167 + ... + 17717236.

It is an arithmetic number, because the mean of its divisors is an integer number (212606424).

Almost surely, 2^1240204105 is an apocalyptic number.

It is an amenable number.

1240204105 is a deficient number, since it is larger than the sum of its proper divisors (460647287).

1240204105 is an equidigital number, since it uses as much as digits as its factorization.

1240204105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35434415.

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

The square root of 1240204105 is about 35216.5317003251. The cubic root of 1240204105 is about 1074.3960133379.

Adding to 1240204105 its reverse (5014020421), we get a palindrome (6254224526).

The spelling of 1240204105 in words is "one billion, two hundred forty million, two hundred four thousand, one hundred five".