21141602 has 4 divisors (see below), whose sum is σ = 31712406. Its totient is φ = 10570800.

The previous prime is 21141581. The next prime is 21141607. The reversal of 21141602 is 20614112.

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

It can be written as a sum of positive squares in only one way, i.e., 20241001 + 900601 = 4499^2 + 949^2 .

It is not an unprimeable number, because it can be changed into a prime (21141607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5285399 + ... + 5285402.

Almost surely, 2^21141602 is an apocalyptic number.

21141602 is a deficient number, since it is larger than the sum of its proper divisors (10570804).

21141602 is a wasteful number, since it uses less digits than its factorization.

21141602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10570803.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 21141602 is about 4597.9997825141. Note that the first 3 decimals coincide. The cubic root of 21141602 is about 276.5111388572.

Adding to 21141602 its reverse (20614112), we get a palindrome (41755714).

The spelling of 21141602 in words is "twenty-one million, one hundred forty-one thousand, six hundred two".