19414121 has 4 divisors (see below), whose sum is σ = 19703952. Its totient is φ = 19124292.

The previous prime is 19414117. The next prime is 19414141. The reversal of 19414121 is 12141491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12141491 = 31 ⋅391661.

It is a cyclic number.

It is not a de Polignac number, because 19414121 - 2² = 19414117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19414111) 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 3 ways as a sum of consecutive naturals, for example, 144815 + ... + 144948.

It is an arithmetic number, because the mean of its divisors is an integer number (4925988).

Almost surely, 2^19414121 is an apocalyptic number.

It is an amenable number.

19414121 is a deficient number, since it is larger than the sum of its proper divisors (289831).

19414121 is an equidigital number, since it uses as much as digits as its factorization.

19414121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289830.

The product of its digits is 288, while the sum is 23.

The square root of 19414121 is about 4406.1458214635. The cubic root of 19414121 is about 268.7649167131.

The spelling of 19414121 in words is "nineteen million, four hundred fourteen thousand, one hundred twenty-one".