21041030 has 8 divisors (see below), whose sum is σ = 37873872. Its totient is φ = 8416408.

The previous prime is 21041029. The next prime is 21041047. The reversal of 21041030 is 3014012.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1052042 + ... + 1052061.

It is an arithmetic number, because the mean of its divisors is an integer number (4734234).

Almost surely, 2^21041030 is an apocalyptic number.

21041030 is a deficient number, since it is larger than the sum of its proper divisors (16832842).

21041030 is a wasteful number, since it uses less digits than its factorization.

21041030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104110.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 21041030 is about 4587.0502504333. The cubic root of 21041030 is about 276.0719811556.

Adding to 21041030 its reverse (3014012), we get a palindrome (24055042).

The spelling of 21041030 in words is "twenty-one million, forty-one thousand, thirty".