21183042 has 8 divisors (see below), whose sum is σ = 42366096. Its totient is φ = 7061012.

The previous prime is 21183031. The next prime is 21183059. The reversal of 21183042 is 24038112.

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

21183042 is an admirable number.

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, 1765248 + ... + 1765259.

It is an arithmetic number, because the mean of its divisors is an integer number (5295762).

Almost surely, 2^21183042 is an apocalyptic number.

21183042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21183042 is a wasteful number, since it uses less digits than its factorization.

21183042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530512.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 21183042 is about 4602.5038837572. The cubic root of 21183042 is about 276.6916856135.

The spelling of 21183042 in words is "twenty-one million, one hundred eighty-three thousand, forty-two".