1240240142 has 32 divisors (see below), whose sum is σ = 1929882240. Its totient is φ = 597411360.

The previous prime is 1240240139. The next prime is 1240240147. The reversal of 1240240142 is 2410420421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240240147) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3188084 + ... + 3188472.

It is an arithmetic number, because the mean of its divisors is an integer number (60308820).

Almost surely, 2^1240240142 is an apocalyptic number.

1240240142 is a deficient number, since it is larger than the sum of its proper divisors (689642098).

1240240142 is a wasteful number, since it uses less digits than its factorization.

1240240142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1240240142 is about 35217.0433455167. The cubic root of 1240240142 is about 1074.4064195911.

Adding to 1240240142 its reverse (2410420421), we get a palindrome (3650660563).

The spelling of 1240240142 in words is "one billion, two hundred forty million, two hundred forty thousand, one hundred forty-two".