1240024240 has 160 divisors (see below), whose sum is σ = 3609768960. Its totient is φ = 385661952.

The previous prime is 1240024117. The next prime is 1240024241. The reversal of 1240024240 is 424200421.

It is not an unprimeable number, because it can be changed into a prime (1240024241) 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 31 ways as a sum of consecutive naturals, for example, 428077 + ... + 430963.

It is an arithmetic number, because the mean of its divisors is an integer number (22561056).

Almost surely, 2^1240024240 is an apocalyptic number.

1240024240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1240024240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1804884480).

1240024240 is an abundant number, since it is smaller than the sum of its proper divisors (2369744720).

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

1240024240 is a wasteful number, since it uses less digits than its factorization.

1240024240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979 (or 2973 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 1240024240 is about 35213.9779065075. The cubic root of 1240024240 is about 1074.3440714623.

Adding to 1240024240 its reverse (424200421), we get a palindrome (1664224661).

The spelling of 1240024240 in words is "one billion, two hundred forty million, twenty-four thousand, two hundred forty".