102041321420 has 24 divisors (see below), whose sum is σ = 214482874704. Its totient is φ = 40779176256.

The previous prime is 102041321419. The next prime is 102041321477. The reversal of 102041321420 is 24123140201.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 102041321392 and 102041321401.

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, 2312114 + ... + 2355833.

It is an arithmetic number, because the mean of its divisors is an integer number (8936786446).

Almost surely, 2^102041321420 is an apocalyptic number.

102041321420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102041321420 is an abundant number, since it is smaller than the sum of its proper divisors (112441553284).

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

102041321420 is a wasteful number, since it uses less digits than its factorization.

102041321420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4669049 (or 4669047 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 102041321420 its reverse (24123140201), we get a palindrome (126164461621).

The spelling of 102041321420 in words is "one hundred two billion, forty-one million, three hundred twenty-one thousand, four hundred twenty".