1205336140 has 24 divisors (see below), whose sum is σ = 2532049632. Its totient is φ = 481973760.

The previous prime is 1205336089. The next prime is 1205336189. The reversal of 1205336140 is 416335021.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65212 + ... + 81628.

It is an arithmetic number, because the mean of its divisors is an integer number (105502068).

Almost surely, 2^1205336140 is an apocalyptic number.

1205336140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1205336140 is an abundant number, since it is smaller than the sum of its proper divisors (1326713492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1205336140 is a wasteful number, since it uses less digits than its factorization.

1205336140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20097 (or 20095 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1205336140 is about 34717.9512644396. The cubic root of 1205336140 is about 1064.2313776399.

The spelling of 1205336140 in words is "one billion, two hundred five million, three hundred thirty-six thousand, one hundred forty".