23420240430040 has 32 divisors (see below), whose sum is σ = 55468990494000. Its totient is φ = 8875038478464.

The previous prime is 23420240430017. The next prime is 23420240430061. The reversal of 23420240430040 is 4003404202432.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 23420240429990 and 23420240430008.

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, 15408052155 + ... + 15408053674.

Almost surely, 2^{23420240430040} is an apocalyptic number.

23420240430040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23420240430040 is an abundant number, since it is smaller than the sum of its proper divisors (32048750063960).

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

23420240430040 is a wasteful number, since it uses less digits than its factorization.

23420240430040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30816105859 (or 30816105855 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 23420240430040 its reverse (4003404202432), we get a palindrome (27423644632472).

The spelling of 23420240430040 in words is "twenty-three trillion, four hundred twenty billion, two hundred forty million, four hundred thirty thousand, forty".