1230532405 has 4 divisors (see below), whose sum is σ = 1476638892. Its totient is φ = 984425920.

The previous prime is 1230532399. The next prime is 1230532411. The reversal of 1230532405 is 5042350321.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1230532399) and next prime (1230532411).

It can be written as a sum of positive squares in 2 ways, for example, as 200250801 + 1030281604 = 14151^2 + 32098^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1230532405 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1230532405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123053236 + ... + 123053245.

It is an arithmetic number, because the mean of its divisors is an integer number (369159723).

Almost surely, 2^1230532405 is an apocalyptic number.

It is an amenable number.

1230532405 is a deficient number, since it is larger than the sum of its proper divisors (246106487).

1230532405 is an equidigital number, since it uses as much as digits as its factorization.

1230532405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246106486.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 1230532405 is about 35078.9453233703. The cubic root of 1230532405 is about 1071.5958383639.

Adding to 1230532405 its reverse (5042350321), we get a palindrome (6272882726).

The spelling of 1230532405 in words is "one billion, two hundred thirty million, five hundred thirty-two thousand, four hundred five".