21041502 has 16 divisors (see below), whose sum is σ = 42230160. Its totient is φ = 6989312.

The previous prime is 21041479. The next prime is 21041513. The reversal of 21041502 is 20514012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4227 + ... + 7742.

It is an arithmetic number, because the mean of its divisors is an integer number (2639385).

Almost surely, 2^21041502 is an apocalyptic number.

21041502 is an abundant number, since it is smaller than the sum of its proper divisors (21188658).

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

21041502 is a wasteful number, since it uses less digits than its factorization.

21041502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12267.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 21041502 is about 4587.1016993304. The cubic root of 21041502 is about 276.0740454557.

Adding to 21041502 its reverse (20514012), we get a palindrome (41555514).

The spelling of 21041502 in words is "twenty-one million, forty-one thousand, five hundred two".