1421208 has 24 divisors (see below), whose sum is σ = 3849300. Its totient is φ = 473712.

The previous prime is 1421191. The next prime is 1421213. The reversal of 1421208 is 8021241.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9798 + ... + 9941.

2^1421208 is an apocalyptic number.

1421208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1421208 is an abundant number, since it is smaller than the sum of its proper divisors (2428092).

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

1421208 is a wasteful number, since it uses less digits than its factorization.

1421208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19751 (or 19744 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1421208 is about 1192.1442865694. The cubic root of 1421208 is about 112.4309502202.

Adding to 1421208 its reverse (8021241), we get a palindrome (9442449).

The spelling of 1421208 in words is "one million, four hundred twenty-one thousand, two hundred eight".