1240502140 has 48 divisors (see below), whose sum is σ = 2685684960. Its totient is φ = 481075200.

The previous prime is 1240502129. The next prime is 1240502177. The reversal of 1240502140 is 412050421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78940 + ... + 93340.

It is an arithmetic number, because the mean of its divisors is an integer number (55951770).

Almost surely, 2^1240502140 is an apocalyptic number.

1240502140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240502140 is an abundant number, since it is smaller than the sum of its proper divisors (1445182820).

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

1240502140 is a wasteful number, since it uses less digits than its factorization.

1240502140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14542 (or 14540 counting only the distinct ones).

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

The square root of 1240502140 is about 35220.7629105333. The cubic root of 1240502140 is about 1074.4820695948.

Adding to 1240502140 its reverse (412050421), we get a palindrome (1652552561).

The spelling of 1240502140 in words is "one billion, two hundred forty million, five hundred two thousand, one hundred forty".