1240020336 has 40 divisors (see below), whose sum is σ = 3306724864. Its totient is φ = 400006080.

The previous prime is 1240020319. The next prime is 1240020361. The reversal of 1240020336 is 6330200421.

It is a happy number.

1240020336 is a modest number, since divided by 20336 gives 12400 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415186 + ... + 418161.

Almost surely, 2^1240020336 is an apocalyptic number.

1240020336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1240020336 is an abundant number, since it is smaller than the sum of its proper divisors (2066704528).

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

1240020336 is a wasteful number, since it uses less digits than its factorization.

1240020336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833389 (or 833383 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1240020336 is about 35213.9224739307. The cubic root of 1240020336 is about 1074.3429439995.

Adding to 1240020336 its reverse (6330200421), we get a palindrome (7570220757).

The spelling of 1240020336 in words is "one billion, two hundred forty million, twenty thousand, three hundred thirty-six".