1240205134 has 32 divisors (see below), whose sum is σ = 2172119040. Its totient is φ = 520087392.

The previous prime is 1240205117. The next prime is 1240205143. The reversal of 1240205134 is 4315020421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180832 + ... + 187564.

It is an arithmetic number, because the mean of its divisors is an integer number (67878720).

Almost surely, 2^1240205134 is an apocalyptic number.

1240205134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1240205134 is a deficient number, since it is larger than the sum of its proper divisors (931913906).

1240205134 is a wasteful number, since it uses less digits than its factorization.

1240205134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7024.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1240205134 is about 35216.5463099379. The cubic root of 1240205134 is about 1074.3963104807.

Adding to 1240205134 its reverse (4315020421), we get a palindrome (5555225555).

The spelling of 1240205134 in words is "one billion, two hundred forty million, two hundred five thousand, one hundred thirty-four".