1421608 has 16 divisors (see below), whose sum is σ = 2822580. Its totient is φ = 668928.

The previous prime is 1421603. The next prime is 1421611. The reversal of 1421608 is 8061241.

It can be written as a sum of positive squares in 2 ways, for example, as 1127844 + 293764 = 1062^2 + 542^2 .

It is not an unprimeable number, because it can be changed into a prime (1421603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5091 + ... + 5362.

2^1421608 is an apocalyptic number.

It is an amenable number.

1421608 is a deficient number, since it is larger than the sum of its proper divisors (1400972).

1421608 is a wasteful number, since it uses less digits than its factorization.

1421608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10476 (or 10472 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1421608 is about 1192.3120396943. The cubic root of 1421608 is about 112.4414971543.

Adding to 1421608 its reverse (8061241), we get a palindrome (9482849).

The spelling of 1421608 in words is "one million, four hundred twenty-one thousand, six hundred eight".