21035041 has 8 divisors (see below), whose sum is σ = 22461120. Its totient is φ = 19651632.

The previous prime is 21035029. The next prime is 21035059. The reversal of 21035041 is 14053012.

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

It is a cyclic number.

It is not a de Polignac number, because 21035041 - 2¹¹ = 21032993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21005041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9646 + ... + 11623.

It is an arithmetic number, because the mean of its divisors is an integer number (2807640).

Almost surely, 2^21035041 is an apocalyptic number.

It is an amenable number.

21035041 is a deficient number, since it is larger than the sum of its proper divisors (1426079).

21035041 is a wasteful number, since it uses less digits than its factorization.

21035041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21335.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 21035041 is about 4586.3973879288. The cubic root of 21035041 is about 276.0457854799.

Adding to 21035041 its reverse (14053012), we get a palindrome (35088053).

The spelling of 21035041 in words is "twenty-one million, thirty-five thousand, forty-one".