1012439 has 2 divisors, whose sum is σ = 1012440. Its totient is φ = 1012438.

The previous prime is 1012433. The next prime is 1012447. The reversal of 1012439 is 9342101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1012439 - 2⁴ = 1012423 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1012439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506219 + 506220.

It is an arithmetic number, because the mean of its divisors is an integer number (506220).

2^1012439 is an apocalyptic number.

1012439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012439 is an equidigital number, since it uses as much as digits as its factorization.

1012439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1012439 is about 1006.2002782747. The cubic root of 1012439 is about 100.4129259084.

The spelling of 1012439 in words is "one million, twelve thousand, four hundred thirty-nine".