1230404323440 has 80 divisors (see below), whose sum is σ = 3815712841248. Its totient is φ = 327982276608.

The previous prime is 1230404323433. The next prime is 1230404323469. The reversal of 1230404323440 is 443234040321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1230404323398 and 1230404323407.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 351417 + ... + 1607576.

Almost surely, 2^{1230404323440} is an apocalyptic number.

1230404323440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230404323440 is an abundant number, since it is smaller than the sum of its proper divisors (2585308517808).

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

1230404323440 is a wasteful number, since it uses less digits than its factorization.

1230404323440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961626 (or 1961620 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 1230404323440 its reverse (443234040321), we get a palindrome (1673638363761).

The spelling of 1230404323440 in words is "one trillion, two hundred thirty billion, four hundred four million, three hundred twenty-three thousand, four hundred forty".