1421388192 has 192 divisors, whose sum is σ = 4468359168. Its totient is φ = 387475200.

The previous prime is 1421388179. The next prime is 1421388253. The reversal of 1421388192 is 2918831241.

It is a self number, because there is not a number n which added to its sum of digits gives 1421388192.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 20019517 + ... + 20019587.

It is an arithmetic number, because the mean of its divisors is an integer number (23272704).

Almost surely, 2^1421388192 is an apocalyptic number.

1421388192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421388192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2234179584).

1421388192 is an abundant number, since it is smaller than the sum of its proper divisors (3046970976).

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

1421388192 is an frugal number, since it uses more digits than its factorization.

1421388192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 114 counting only the distinct ones).

The product of its digits is 27648, while the sum is 39.

The square root of 1421388192 is about 37701.3022586754. The cubic root of 1421388192 is about 1124.3570164799.

The spelling of 1421388192 in words is "one billion, four hundred twenty-one million, three hundred eighty-eight thousand, one hundred ninety-two".