19121412 has 24 divisors (see below), whose sum is σ = 45655456. Its totient is φ = 6225408.

The previous prime is 19121407. The next prime is 19121419. The reversal of 19121412 is 21412191.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (19121419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18013 + ... + 19044.

Almost surely, 2^19121412 is an apocalyptic number.

19121412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19121412 is an abundant number, since it is smaller than the sum of its proper divisors (26534044).

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

19121412 is a wasteful number, since it uses less digits than its factorization.

19121412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37107 (or 37105 counting only the distinct ones).

The product of its digits is 144, while the sum is 21.

The square root of 19121412 is about 4372.8036772762. The cubic root of 19121412 is about 267.4073373989.

The spelling of 19121412 in words is "nineteen million, one hundred twenty-one thousand, four hundred twelve".