1240431424 has 14 divisors (see below), whose sum is σ = 2461481234. Its totient is φ = 620215680.

The previous prime is 1240431421. The next prime is 1240431433. The reversal of 1240431424 is 4241340421.

It can be written as a sum of positive squares in only one way, i.e., 1070598400 + 169833024 = 32720^2 + 13032^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240431421) 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 as a sum of consecutive naturals, namely, 9690807 + ... + 9690934.

Almost surely, 2^1240431424 is an apocalyptic number.

It is an amenable number.

1240431424 is a deficient number, since it is larger than the sum of its proper divisors (1221049810).

1240431424 is an equidigital number, since it uses as much as digits as its factorization.

1240431424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19381753 (or 19381743 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1240431424 is about 35219.7589997433. The cubic root of 1240431424 is about 1074.4616519173.

Adding to 1240431424 its reverse (4241340421), we get a palindrome (5481771845).

The spelling of 1240431424 in words is "one billion, two hundred forty million, four hundred thirty-one thousand, four hundred twenty-four".