102004021 has 8 divisors (see below), whose sum is σ = 116688320. Its totient is φ = 87347808.

The previous prime is 102004009. The next prime is 102004031. The reversal of 102004021 is 120400201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102004021 - 2⁹ = 102003509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102003989 and 102004007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102004031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1450 + ... + 14356.

It is an arithmetic number, because the mean of its divisors is an integer number (14586040).

Almost surely, 2^102004021 is an apocalyptic number.

It is an amenable number.

102004021 is a deficient number, since it is larger than the sum of its proper divisors (14684299).

102004021 is a wasteful number, since it uses less digits than its factorization.

102004021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14043.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 102004021 is about 10099.7040055637. The cubic root of 102004021 is about 467.2390124391.

Adding to 102004021 its reverse (120400201), we get a palindrome (222404222).

The spelling of 102004021 in words is "one hundred two million, four thousand, twenty-one".