1240340443230 has 48 divisors (see below), whose sum is σ = 3462828017040. Its totient is φ = 283506386688.

The previous prime is 1240340443169. The next prime is 1240340443247. The reversal of 1240340443230 is 323440430421.

It is a happy number.

It is a super-2 number, since 2×1240340443230² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 421883035 + ... + 421885974.

It is an arithmetic number, because the mean of its divisors is an integer number (72142250355).

Almost surely, 2^{1240340443230} is an apocalyptic number.

1240340443230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1240340443230 is an abundant number, since it is smaller than the sum of its proper divisors (2222487573810).

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

1240340443230 is a wasteful number, since it uses less digits than its factorization.

1240340443230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843769033 (or 843769026 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 1240340443230 its reverse (323440430421), we get a palindrome (1563780873651).

The spelling of 1240340443230 in words is "one trillion, two hundred forty billion, three hundred forty million, four hundred forty-three thousand, two hundred thirty".