1425121 has 2 divisors, whose sum is σ = 1425122. Its totient is φ = 1425120.

The previous prime is 1425113. The next prime is 1425139. The reversal of 1425121 is 1215241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1354896 + 70225 = 1164^2 + 265^2 .

It is a cyclic number.

It is not a de Polignac number, because 1425121 - 2³ = 1425113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1425095 and 1425104.

It is not a weakly prime, because it can be changed into another prime (1425521) 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 as a sum of consecutive naturals, namely, 712560 + 712561.

It is an arithmetic number, because the mean of its divisors is an integer number (712561).

2^1425121 is an apocalyptic number.

It is an amenable number.

1425121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425121 is an equidigital number, since it uses as much as digits as its factorization.

1425121 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1425121 is about 1193.7843188784. The cubic root of 1425121 is about 112.5340407276.

The spelling of 1425121 in words is "one million, four hundred twenty-five thousand, one hundred twenty-one".