102004041421 has 4 divisors (see below), whose sum is σ = 107372675200. Its totient is φ = 96635407644.

The previous prime is 102004041413. The next prime is 102004041437. The reversal of 102004041421 is 124140400201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124140400201 = 27817 ⋅4462753.

It is a cyclic number.

It is not a de Polignac number, because 102004041421 - 2³ = 102004041413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 5368633759 = 102004041421 / (1 + 0 + 2 + 0 + 0 + 4 + 0 + 4 + 1 + 4 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102004041221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2684316861 + ... + 2684316898.

It is an arithmetic number, because the mean of its divisors is an integer number (26843168800).

Almost surely, 2^102004041421 is an apocalyptic number.

It is an amenable number.

102004041421 is a deficient number, since it is larger than the sum of its proper divisors (5368633779).

102004041421 is an equidigital number, since it uses as much as digits as its factorization.

102004041421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5368633778.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 102004041421 its reverse (124140400201), we get a palindrome (226144441622).

The spelling of 102004041421 in words is "one hundred two billion, four million, forty-one thousand, four hundred twenty-one".