21241419 has 8 divisors (see below), whose sum is σ = 28449792. Its totient is φ = 14097000.

The previous prime is 21241399. The next prime is 21241421. The reversal of 21241419 is 91414212.

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

It is not a de Polignac number, because 21241419 - 2⁸ = 21241163 is a prime.

It is a super-2 number, since 2×21241419² = 902395762267122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21241469) 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 7 ways as a sum of consecutive naturals, for example, 15207 + ... + 16544.

It is an arithmetic number, because the mean of its divisors is an integer number (3556224).

Almost surely, 2^21241419 is an apocalyptic number.

21241419 is a deficient number, since it is larger than the sum of its proper divisors (7208373).

21241419 is a wasteful number, since it uses less digits than its factorization.

21241419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31977.

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

The square root of 21241419 is about 4608.8413945372. The cubic root of 21241419 is about 276.9456248319.

It can be divided in two parts, 2 and 1241419, that added together give a palindrome (1241421).

The spelling of 21241419 in words is "twenty-one million, two hundred forty-one thousand, four hundred nineteen".