1421125 has 8 divisors (see below), whose sum is σ = 1773720. Its totient is φ = 1136800.

The previous prime is 1421113. The next prime is 1421141. The reversal of 1421125 is 5211241.

It can be written as a sum of positive squares in 4 ways, for example, as 42849 + 1378276 = 207^2 + 1174^2 .

It is not a de Polignac number, because 1421125 - 2⁵ = 1421093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1421099 and 1421108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5560 + ... + 5809.

It is an arithmetic number, because the mean of its divisors is an integer number (221715).

2^1421125 is an apocalyptic number.

It is an amenable number.

1421125 is a deficient number, since it is larger than the sum of its proper divisors (352595).

1421125 is an equidigital number, since it uses as much as digits as its factorization.

1421125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11384 (or 11374 counting only the distinct ones).

The product of its digits is 80, while the sum is 16.

The square root of 1421125 is about 1192.1094748386. The cubic root of 1421125 is about 112.4287614834.

Adding to 1421125 its reverse (5211241), we get a palindrome (6632366).

The spelling of 1421125 in words is "one million, four hundred twenty-one thousand, one hundred twenty-five".