102440343420420 has 24 divisors (see below), whose sum is σ = 286832961577344. Its totient is φ = 27317424912096.

The previous prime is 102440343420403. The next prime is 102440343420421. The reversal of 102440343420420 is 24024343044201.

It is a super-3 number, since 3×102440343420420³ (a number of 43 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (102440343420421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 853669528444 + ... + 853669528563.

It is an arithmetic number, because the mean of its divisors is an integer number (11951373399056).

Almost surely, 2^{102440343420420} is an apocalyptic number.

102440343420420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102440343420420 is an abundant number, since it is smaller than the sum of its proper divisors (184392618156924).

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

102440343420420 is a wasteful number, since it uses less digits than its factorization.

102440343420420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707339057019 (or 1707339057017 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 33.

Adding to 102440343420420 its reverse (24024343044201), we get a palindrome (126464686464621).

The spelling of 102440343420420 in words is "one hundred two trillion, four hundred forty billion, three hundred forty-three million, four hundred twenty thousand, four hundred twenty".