1240342232340 has 24 divisors (see below), whose sum is σ = 3472958250720. Its totient is φ = 330757928608.

The previous prime is 1240342232323. The next prime is 1240342232561. The reversal of 1240342232340 is 432322430421.

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

It is a junction number, because it is equal to n+sod(n) for n = 1240342232298 and 1240342232307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10336185210 + ... + 10336185329.

It is an arithmetic number, because the mean of its divisors is an integer number (144706593780).

Almost surely, 2^{1240342232340} is an apocalyptic number.

1240342232340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240342232340 is an abundant number, since it is smaller than the sum of its proper divisors (2232616018380).

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

1240342232340 is a wasteful number, since it uses less digits than its factorization.

1240342232340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20672370551 (or 20672370549 counting only the distinct ones).

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

Adding to 1240342232340 its reverse (432322430421), we get a palindrome (1672664662761).

The spelling of 1240342232340 in words is "one trillion, two hundred forty billion, three hundred forty-two million, two hundred thirty-two thousand, three hundred forty".