21141146 has 8 divisors (see below), whose sum is σ = 34151124. Its totient is φ = 9757440.

The previous prime is 21141143. The next prime is 21141161. The reversal of 21141146 is 64114112.

It can be written as a sum of positive squares in 2 ways, for example, as 20151121 + 990025 = 4489^2 + 995^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21141143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406535 + ... + 406586.

Almost surely, 2^21141146 is an apocalyptic number.

21141146 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21141146 is a deficient number, since it is larger than the sum of its proper divisors (13009978).

21141146 is a wasteful number, since it uses less digits than its factorization.

21141146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813136.

The product of its digits is 192, while the sum is 20.

The square root of 21141146 is about 4597.9501954675. The cubic root of 21141146 is about 276.5091508340.

Adding to 21141146 its reverse (64114112), we get a palindrome (85255258).

The spelling of 21141146 in words is "twenty-one million, one hundred forty-one thousand, one hundred forty-six".