1421188 has 6 divisors (see below), whose sum is σ = 2487086. Its totient is φ = 710592.

The previous prime is 1421159. The next prime is 1421191. The reversal of 1421188 is 8811241.

It can be written as a sum of positive squares in only one way, i.e., 1420864 + 324 = 1192^2 + 18^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 177645 + ... + 177652.

2^1421188 is an apocalyptic number.

It is an amenable number.

1421188 is a deficient number, since it is larger than the sum of its proper divisors (1065898).

1421188 is a wasteful number, since it uses less digits than its factorization.

1421188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355301 (or 355299 counting only the distinct ones).

The product of its digits is 512, while the sum is 25.

The square root of 1421188 is about 1192.1358982935. The cubic root of 1421188 is about 112.4304228215.

The spelling of 1421188 in words is "one million, four hundred twenty-one thousand, one hundred eighty-eight".