1421530 has 16 divisors (see below), whose sum is σ = 2791584. Its totient is φ = 516880.

The previous prime is 1421527. The next prime is 1421543. The reversal of 1421530 is 351241.

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 in 7 ways as a sum of consecutive naturals, for example, 6352 + ... + 6571.

It is an arithmetic number, because the mean of its divisors is an integer number (174474).

2^1421530 is an apocalyptic number.

1421530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1421530 is a deficient number, since it is larger than the sum of its proper divisors (1370054).

1421530 is a wasteful number, since it uses less digits than its factorization.

1421530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12941.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1421530 is about 1192.2793296875. The cubic root of 1421530 is about 112.4394406575.

Adding to 1421530 its reverse (351241), we get a palindrome (1772771).

The spelling of 1421530 in words is "one million, four hundred twenty-one thousand, five hundred thirty".