20242343142040 has 128 divisors (see below), whose sum is σ = 49174811640000. Its totient is φ = 7475538290688.

The previous prime is 20242343142013. The next prime is 20242343142083. The reversal of 20242343142040 is 4024134324202.

It is a junction number, because it is equal to n+sod(n) for n = 20242343141993 and 20242343142011.

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 31 ways as a sum of consecutive naturals, for example, 4315342 + ... + 7688098.

Almost surely, 2^{20242343142040} is an apocalyptic number.

20242343142040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20242343142040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24587405820000).

20242343142040 is an abundant number, since it is smaller than the sum of its proper divisors (28932468497960).

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

20242343142040 is a wasteful number, since it uses less digits than its factorization.

20242343142040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3372989 (or 3372985 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 20242343142040 its reverse (4024134324202), we get a palindrome (24266477466242).

The spelling of 20242343142040 in words is "twenty trillion, two hundred forty-two billion, three hundred forty-three million, one hundred forty-two thousand, forty".