1240043430 has 16 divisors (see below), whose sum is σ = 2976104304. Its totient is φ = 330678240.

The previous prime is 1240043423. The next prime is 1240043447. The reversal of 1240043430 is 343400421.

It is a junction number, because it is equal to n+sod(n) for n = 1240043397 and 1240043406.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 20667361 + ... + 20667420.

It is an arithmetic number, because the mean of its divisors is an integer number (186006519).

Almost surely, 2^1240043430 is an apocalyptic number.

1240043430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1240043430 is an abundant number, since it is smaller than the sum of its proper divisors (1736060874).

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

1240043430 is a wasteful number, since it uses less digits than its factorization.

1240043430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41334791.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1240043430 is about 35214.2503824801. The cubic root of 1240043430 is about 1074.3496134390.

Adding to 1240043430 its reverse (343400421), we get a palindrome (1583443851).

The spelling of 1240043430 in words is "one billion, two hundred forty million, forty-three thousand, four hundred thirty".