1201439 has 2 divisors, whose sum is σ = 1201440. Its totient is φ = 1201438.

The previous prime is 1201381. The next prime is 1201469. The reversal of 1201439 is 9341021.

1201439 is nontrivially palindromic in base 3.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1201439 - 2⁸ = 1201183 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600719 + 600720.

It is an arithmetic number, because the mean of its divisors is an integer number (600720).

2^1201439 is an apocalyptic number.

1201439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201439 is an equidigital number, since it uses as much as digits as its factorization.

1201439 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1201439 is about 1096.1017288555. The cubic root of 1201439 is about 106.3083167751.

The spelling of 1201439 in words is "one million, two hundred one thousand, four hundred thirty-nine".