1240310020 has 24 divisors (see below), whose sum is σ = 2613552984. Its totient is φ = 494428416.

The previous prime is 1240310009. The next prime is 1240310023. The reversal of 1240310020 is 200130421.

It can be written as a sum of positive squares in 4 ways, for example, as 708730884 + 531579136 = 26622^2 + 23056^2 .

It is not an unprimeable number, because it can be changed into a prime (1240310023) 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 7 ways as a sum of consecutive naturals, for example, 99969 + ... + 111688.

It is an arithmetic number, because the mean of its divisors is an integer number (108898041).

Almost surely, 2^1240310020 is an apocalyptic number.

1240310020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240310020 is an abundant number, since it is smaller than the sum of its proper divisors (1373242964).

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

1240310020 is a wasteful number, since it uses less digits than its factorization.

1240310020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211959 (or 211957 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1240310020 is about 35218.0354364067. The cubic root of 1240310020 is about 1074.4265973936.

Adding to 1240310020 its reverse (200130421), we get a palindrome (1440440441).

The spelling of 1240310020 in words is "one billion, two hundred forty million, three hundred ten thousand, twenty".