1421107 has 4 divisors (see below), whose sum is σ = 1454200. Its totient is φ = 1388016.

The previous prime is 1421099. The next prime is 1421113. The reversal of 1421107 is 7011241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7011241 = 37 ⋅189493.

It is a cyclic number.

It is not a de Polignac number, because 1421107 - 2³ = 1421099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1422107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16482 + ... + 16567.

It is an arithmetic number, because the mean of its divisors is an integer number (363550).

2^1421107 is an apocalyptic number.

1421107 is a deficient number, since it is larger than the sum of its proper divisors (33093).

1421107 is an equidigital number, since it uses as much as digits as its factorization.

1421107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33092.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 1421107 is about 1192.1019251725. The cubic root of 1421107 is about 112.4282868064.

Adding to 1421107 its reverse (7011241), we get a palindrome (8432348).

The spelling of 1421107 in words is "one million, four hundred twenty-one thousand, one hundred seven".