1240332640 has 24 divisors (see below), whose sum is σ = 2930286240. Its totient is φ = 496132992.

The previous prime is 1240332637. The next prime is 1240332641. The reversal of 1240332640 is 462330421.

It is a super-3 number, since 3×1240332640³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240332641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3875880 + ... + 3876199.

It is an arithmetic number, because the mean of its divisors is an integer number (122095260).

Almost surely, 2^1240332640 is an apocalyptic number.

1240332640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240332640 is an abundant number, since it is smaller than the sum of its proper divisors (1689953600).

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

1240332640 is an equidigital number, since it uses as much as digits as its factorization.

1240332640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7752094 (or 7752086 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 1240332640 is about 35218.3565772169. The cubic root of 1240332640 is about 1074.4331289278.

The spelling of 1240332640 in words is "one billion, two hundred forty million, three hundred thirty-two thousand, six hundred forty".