1061405239 has 2 divisors, whose sum is σ = 1061405240. Its totient is φ = 1061405238.

The previous prime is 1061405231. The next prime is 1061405269. The reversal of 1061405239 is 9325041601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1061405239 - 2³ = 1061405231 is a prime.

It is a super-2 number, since 2×1061405239² = 2253162162753294242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1061405239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1061405231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530702619 + 530702620.

It is an arithmetic number, because the mean of its divisors is an integer number (530702620).

Almost surely, 2^1061405239 is an apocalyptic number.

1061405239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061405239 is an equidigital number, since it uses as much as digits as its factorization.

1061405239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 1061405239 is about 32579.2148309317. The cubic root of 1061405239 is about 1020.0631894084.

The spelling of 1061405239 in words is "one billion, sixty-one million, four hundred five thousand, two hundred thirty-nine".