1421189 has 8 divisors (see below), whose sum is σ = 1771968. Its totient is φ = 1107360.

The previous prime is 1421159. The next prime is 1421191. The reversal of 1421189 is 9811241.

1421189 = 113² + 114² + ... + 178².

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

It is a cyclic number.

It is not a de Polignac number, because 1421189 - 2⁸ = 1420933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421159) 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, 9152 + ... + 9305.

It is an arithmetic number, because the mean of its divisors is an integer number (221496).

2^1421189 is an apocalyptic number.

It is an amenable number.

1421189 is a deficient number, since it is larger than the sum of its proper divisors (350779).

1421189 is a wasteful number, since it uses less digits than its factorization.

1421189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18475.

The product of its digits is 576, while the sum is 26.

The square root of 1421189 is about 1192.1363177087. The cubic root of 1421189 is about 112.4304491916.

It can be divided in two parts, 142 and 1189, that added together give a palindrome (1331).

The spelling of 1421189 in words is "one million, four hundred twenty-one thousand, one hundred eighty-nine".