1425139 has 2 divisors, whose sum is σ = 1425140. Its totient is φ = 1425138.

The previous prime is 1425121. The next prime is 1425169. The reversal of 1425139 is 9315241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1425139 - 2¹¹ = 1423091 is a prime.

It is an Ulam number.

1425139 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1425169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712569 + 712570.

It is an arithmetic number, because the mean of its divisors is an integer number (712570).

2^1425139 is an apocalyptic number.

1425139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425139 is an equidigital number, since it uses as much as digits as its factorization.

1425139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 25.

The square root of 1425139 is about 1193.7918579049. The cubic root of 1425139 is about 112.5345145129.

The spelling of 1425139 in words is "one million, four hundred twenty-five thousand, one hundred thirty-nine".