1240941205 has 64 divisors (see below), whose sum is σ = 1845711360. Its totient is φ = 782106624.

The previous prime is 1240941199. The next prime is 1240941209. The reversal of 1240941205 is 5021490421.

It is a cyclic number.

It is not a de Polignac number, because 1240941205 - 2⁵ = 1240941173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240941209) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4828437 + ... + 4828693.

It is an arithmetic number, because the mean of its divisors is an integer number (28839240).

Almost surely, 2^1240941205 is an apocalyptic number.

It is an amenable number.

1240941205 is a deficient number, since it is larger than the sum of its proper divisors (604770155).

1240941205 is a wasteful number, since it uses less digits than its factorization.

1240941205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1240941205 is about 35226.9954012544. The cubic root of 1240941205 is about 1074.6088225191.

The spelling of 1240941205 in words is "one billion, two hundred forty million, nine hundred forty-one thousand, two hundred five".