1240332144 has 20 divisors (see below), whose sum is σ = 3204191496. Its totient is φ = 413444032.

The previous prime is 1240332143. The next prime is 1240332229. The reversal of 1240332144 is 4412330421.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240332143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12920079 + ... + 12920174.

Almost surely, 2^1240332144 is an apocalyptic number.

It is an amenable number.

1240332144 is an abundant number, since it is smaller than the sum of its proper divisors (1963859352).

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

1240332144 is a wasteful number, since it uses less digits than its factorization.

1240332144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25840264 (or 25840258 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1240332144 is about 35218.3495354339. The cubic root of 1240332144 is about 1074.4329857085.

Adding to 1240332144 its reverse (4412330421), we get a palindrome (5652662565).

The spelling of 1240332144 in words is "one billion, two hundred forty million, three hundred thirty-two thousand, one hundred forty-four".