1240204036 has 48 divisors (see below), whose sum is σ = 2278075072. Its totient is φ = 590198400.

The previous prime is 1240204001. The next prime is 1240204037. The reversal of 1240204036 is 6304020421.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1240203998 and 1240204016.

It is not an unprimeable number, because it can be changed into a prime (1240204037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1794451 + ... + 1795141.

Almost surely, 2^1240204036 is an apocalyptic number.

It is an amenable number.

1240204036 is a deficient number, since it is larger than the sum of its proper divisors (1037871036).

1240204036 is a wasteful number, since it uses less digits than its factorization.

1240204036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980 (or 978 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1240204036 is about 35216.5307206715. The cubic root of 1240204036 is about 1074.3959934128.

Adding to 1240204036 its reverse (6304020421), we get a palindrome (7544224457).

The spelling of 1240204036 in words is "one billion, two hundred forty million, two hundred four thousand, thirty-six".