102131420004 has 72 divisors (see below), whose sum is σ = 268085307672. Its totient is φ = 32758456320.

The previous prime is 102131419909. The next prime is 102131420023. The reversal of 102131420004 is 400024131201.

It can be written as a sum of positive squares in 4 ways, for example, as 594872100 + 101536547904 = 24390^2 + 318648^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 366189 + ... + 581684.

It is an arithmetic number, because the mean of its divisors is an integer number (3723407051).

Almost surely, 2^102131420004 is an apocalyptic number.

It is an amenable number.

102131420004 is an abundant number, since it is smaller than the sum of its proper divisors (165953887668).

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

102131420004 is a wasteful number, since it uses less digits than its factorization.

102131420004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947997 (or 947992 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 102131420004 its reverse (400024131201), we get a palindrome (502155551205).

The spelling of 102131420004 in words is "one hundred two billion, one hundred thirty-one million, four hundred twenty thousand, four".