21442119 has 8 divisors (see below), whose sum is σ = 28718592. Its totient is φ = 14230200.

The previous prime is 21442103. The next prime is 21442133. The reversal of 21442119 is 91124412.

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

It is not a de Polignac number, because 21442119 - 2⁴ = 21442103 is a prime.

It is a super-2 number, since 2×21442119² = 919528934420322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21442159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15357 + ... + 16694.

It is an arithmetic number, because the mean of its divisors is an integer number (3589824).

Almost surely, 2^21442119 is an apocalyptic number.

21442119 is a deficient number, since it is larger than the sum of its proper divisors (7276473).

21442119 is a wasteful number, since it uses less digits than its factorization.

21442119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32277.

The product of its digits is 576, while the sum is 24.

The square root of 21442119 is about 4630.5635726119. The cubic root of 21442119 is about 277.8151342411.

The spelling of 21442119 in words is "twenty-one million, four hundred forty-two thousand, one hundred nineteen".