21034141 has 4 divisors (see below), whose sum is σ = 21046300. Its totient is φ = 21021984.

The previous prime is 21034133. The next prime is 21034183. The reversal of 21034141 is 14143012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12355225 + 8678916 = 3515^2 + 2946^2 .

It is a cyclic number.

It is not a de Polignac number, because 21034141 - 2³ = 21034133 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21038141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2946 + ... + 7123.

It is an arithmetic number, because the mean of its divisors is an integer number (5261575).

Almost surely, 2^21034141 is an apocalyptic number.

It is an amenable number.

21034141 is a deficient number, since it is larger than the sum of its proper divisors (12159).

21034141 is a wasteful number, since it uses less digits than its factorization.

21034141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12158.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 21034141 is about 4586.2992706538. The cubic root of 21034141 is about 276.0418484818.

Adding to 21034141 its reverse (14143012), we get a palindrome (35177153).

The spelling of 21034141 in words is "twenty-one million, thirty-four thousand, one hundred forty-one".