21842062 has 16 divisors (see below), whose sum is σ = 36708912. Its totient is φ = 9659520.

The previous prime is 21842027. The next prime is 21842083. The reversal of 21842062 is 26024812.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12603 + ... + 14230.

It is an arithmetic number, because the mean of its divisors is an integer number (2294307).

Almost surely, 2^21842062 is an apocalyptic number.

21842062 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21842062 is a deficient number, since it is larger than the sum of its proper divisors (14866850).

21842062 is a wasteful number, since it uses less digits than its factorization.

21842062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26883.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 21842062 is about 4673.5491866461. The cubic root of 21842062 is about 279.5317940498.

Adding to 21842062 its reverse (26024812), we get a palindrome (47866874).

The spelling of 21842062 in words is "twenty-one million, eight hundred forty-two thousand, sixty-two".