21004114 has 8 divisors (see below), whose sum is σ = 31637628. Its totient is φ = 10458240.

The previous prime is 21004099. The next prime is 21004117. The reversal of 21004114 is 41140012.

It can be written as a sum of positive squares in 2 ways, for example, as 21003889 + 225 = 4583^2 + 15^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 21004094 and 21004103.

It is not an unprimeable number, because it can be changed into a prime (21004117) 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, 21307 + ... + 22270.

Almost surely, 2^21004114 is an apocalyptic number.

21004114 is a deficient number, since it is larger than the sum of its proper divisors (10633514).

21004114 is a wasteful number, since it uses less digits than its factorization.

21004114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43820.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 21004114 is about 4583.0245471741. The cubic root of 21004114 is about 275.9104326745.

Adding to 21004114 its reverse (41140012), we get a palindrome (62144126).

The spelling of 21004114 in words is "twenty-one million, four thousand, one hundred fourteen".