1240636004 has 12 divisors (see below), whose sum is σ = 2171456364. Its totient is φ = 620219904.

The previous prime is 1240635983. The next prime is 1240636009. The reversal of 1240636004 is 4006360421.

It can be written as a sum of positive squares in 2 ways, for example, as 304153600 + 936482404 = 17440^2 + 30602^2 .

It is not an unprimeable number, because it can be changed into a prime (1240636009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9032 + ... + 50624.

It is an arithmetic number, because the mean of its divisors is an integer number (180954697).

Almost surely, 2^1240636004 is an apocalyptic number.

It is an amenable number.

1240636004 is a deficient number, since it is larger than the sum of its proper divisors (930820360).

1240636004 is a wasteful number, since it uses less digits than its factorization.

1240636004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49054 (or 49052 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 1240636004 is about 35222.6632156059. The cubic root of 1240636004 is about 1074.5207177330.

Adding to 1240636004 its reverse (4006360421), we get a palindrome (5246996425).

The spelling of 1240636004 in words is "one billion, two hundred forty million, six hundred thirty-six thousand, four".