10821842 has 8 divisors (see below), whose sum is σ = 16327116. Its totient is φ = 5379472.

The previous prime is 10821829. The next prime is 10821851. The reversal of 10821842 is 24812801.

It can be written as a sum of positive squares in 2 ways, for example, as 9991921 + 829921 = 3161^2 + 911^2 .

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

It is a super-2 number, since 2×10821842² = 234224528545928, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15293 + ... + 15984.

Almost surely, 2^10821842 is an apocalyptic number.

10821842 is a deficient number, since it is larger than the sum of its proper divisors (5505274).

10821842 is a wasteful number, since it uses less digits than its factorization.

10821842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31452.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 10821842 is about 3289.6568210073. The cubic root of 10821842 is about 221.1908018285.

The spelling of 10821842 in words is "ten million, eight hundred twenty-one thousand, eight hundred forty-two".