19421061 has 8 divisors (see below), whose sum is σ = 28248864. Its totient is φ = 11770320.

The previous prime is 19421053. The next prime is 19421063. The reversal of 19421061 is 16012491.

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

It is not a de Polignac number, because 19421061 - 2³ = 19421053 is a prime.

It is a super-2 number, since 2×19421061² = 754355220731442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19421063) 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, 294226 + ... + 294291.

It is an arithmetic number, because the mean of its divisors is an integer number (3531108).

Almost surely, 2^19421061 is an apocalyptic number.

19421061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

19421061 is a deficient number, since it is larger than the sum of its proper divisors (8827803).

19421061 is a wasteful number, since it uses less digits than its factorization.

19421061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588531.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 19421061 is about 4406.9332874460. The cubic root of 19421061 is about 268.7969381870.

It can be divided in two parts, 1942 and 1061, that added together give a palindrome (3003).

The spelling of 19421061 in words is "nineteen million, four hundred twenty-one thousand, sixty-one".