1230400635 has 8 divisors (see below), whose sum is σ = 1968641040. Its totient is φ = 656213664.

The previous prime is 1230400621. The next prime is 1230400643. The reversal of 1230400635 is 5360040321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1230400635 - 2²⁹ = 693529723 is a prime.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 41013340 + ... + 41013369.

It is an arithmetic number, because the mean of its divisors is an integer number (246080130).

Almost surely, 2^1230400635 is an apocalyptic number.

1230400635 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1230400635 is a deficient number, since it is larger than the sum of its proper divisors (738240405).

1230400635 is an equidigital number, since it uses as much as digits as its factorization.

1230400635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82026717.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1230400635 is about 35077.0670809291. The cubic root of 1230400635 is about 1071.5575868387.

Adding to 1230400635 its reverse (5360040321), we get a palindrome (6590440956).

The spelling of 1230400635 in words is "one billion, two hundred thirty million, four hundred thousand, six hundred thirty-five".