1230340420 has 24 divisors (see below), whose sum is σ = 2585583000. Its totient is φ = 491780352.

The previous prime is 1230340409. The next prime is 1230340429. The reversal of 1230340420 is 240430321.

It can be written as a sum of positive squares in 4 ways, for example, as 106213636 + 1124126784 = 10306^2 + 33528^2 .

It is not an unprimeable number, because it can be changed into a prime (1230340429) 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 in 7 ways as a sum of consecutive naturals, for example, 7056 + ... + 50104.

It is an arithmetic number, because the mean of its divisors is an integer number (107732625).

Almost surely, 2^1230340420 is an apocalyptic number.

1230340420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230340420 is an abundant number, since it is smaller than the sum of its proper divisors (1355242580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1230340420 is a wasteful number, since it uses less digits than its factorization.

1230340420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44487 (or 44485 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 1230340420 is about 35076.2087461003. The cubic root of 1230340420 is about 1071.5401061117.

Adding to 1230340420 its reverse (240430321), we get a palindrome (1470770741).

The spelling of 1230340420 in words is "one billion, two hundred thirty million, three hundred forty thousand, four hundred twenty".