21412130 has 8 divisors (see below), whose sum is σ = 38541852. Its totient is φ = 8564848.

The previous prime is 21412123. The next prime is 21412133. The reversal of 21412130 is 3121412.

It can be written as a sum of positive squares in 2 ways, for example, as 20967241 + 444889 = 4579^2 + 667^2 .

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

It is a super-2 number, since 2×21412130² = 916958622273800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21412133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1070597 + ... + 1070616.

Almost surely, 2^21412130 is an apocalyptic number.

21412130 is a deficient number, since it is larger than the sum of its proper divisors (17129722).

21412130 is a wasteful number, since it uses less digits than its factorization.

21412130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141220.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 21412130 is about 4627.3242808344. The cubic root of 21412130 is about 277.6855561712.

Adding to 21412130 its reverse (3121412), we get a palindrome (24533542).

The spelling of 21412130 in words is "twenty-one million, four hundred twelve thousand, one hundred thirty".