21141030 has 32 divisors (see below), whose sum is σ = 53724384. Its totient is φ = 5305856.

The previous prime is 21141007. The next prime is 21141037. The reversal of 21141030 is 3014112.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21140997 and 21141015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21141037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20217 + ... + 21236.

It is an arithmetic number, because the mean of its divisors is an integer number (1678887).

Almost surely, 2^21141030 is an apocalyptic number.

21141030 is an abundant number, since it is smaller than the sum of its proper divisors (32583354).

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

21141030 is a wasteful number, since it uses less digits than its factorization.

21141030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41480.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 21141030 is about 4597.9375811335. The cubic root of 21141030 is about 276.5086451042.

Adding to 21141030 its reverse (3014112), we get a palindrome (24155142).

The spelling of 21141030 in words is "twenty-one million, one hundred forty-one thousand, thirty".