21141004 has 6 divisors (see below), whose sum is σ = 36996764. Its totient is φ = 10570500.

The previous prime is 21140957. The next prime is 21141007. The reversal of 21141004 is 40014112.

It is not an unprimeable number, because it can be changed into a prime (21141007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2642622 + ... + 2642629.

Almost surely, 2^21141004 is an apocalyptic number.

It is an amenable number.

21141004 is a deficient number, since it is larger than the sum of its proper divisors (15855760).

21141004 is a wasteful number, since it uses less digits than its factorization.

21141004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5285255 (or 5285253 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 21141004 is about 4597.9347537780. The cubic root of 21141004 is about 276.5085317507.

Adding to 21141004 its reverse (40014112), we get a palindrome (61155116).

The spelling of 21141004 in words is "twenty-one million, one hundred forty-one thousand, four".