1200024430420 has 24 divisors (see below), whose sum is σ = 2520100543464. Its totient is φ = 480000393216.

The previous prime is 1200024430387. The next prime is 1200024430433. The reversal of 1200024430420 is 240344200021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14221039504 + 1185803390916 = 119252^2 + 1088946^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1200024430391 and 1200024430400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513292 + ... + 1632028.

It is an arithmetic number, because the mean of its divisors is an integer number (105004189311).

Almost surely, 2^{1200024430420} is an apocalyptic number.

1200024430420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200024430420 is an abundant number, since it is smaller than the sum of its proper divisors (1320076113044).

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

1200024430420 is a wasteful number, since it uses less digits than its factorization.

1200024430420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172379 (or 1172377 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 1200024430420 its reverse (240344200021), we get a palindrome (1440368630441).

The spelling of 1200024430420 in words is "one trillion, two hundred billion, twenty-four million, four hundred thirty thousand, four hundred twenty".