21141050 has 36 divisors (see below), whose sum is σ = 45747630. Its totient is φ = 7247520.

The previous prime is 21141041. The next prime is 21141061. The reversal of 21141050 is 5014112.

It can be written as a sum of positive squares in 3 ways, for example, as 18054001 + 3087049 = 4249^2 + 1757^2 .

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 1865 + ... + 6764.

Almost surely, 2^21141050 is an apocalyptic number.

21141050 is an abundant number, since it is smaller than the sum of its proper divisors (24606580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21141050 is a wasteful number, since it uses less digits than its factorization.

21141050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8655 (or 8643 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 21141050 is about 4597.9397560212. The cubic root of 21141050 is about 276.5087322991.

Adding to 21141050 its reverse (5014112), we get a palindrome (26155162).

The spelling of 21141050 in words is "twenty-one million, one hundred forty-one thousand, fifty".