1200420143120 has 40 divisors (see below), whose sum is σ = 3044702001600. Its totient is φ = 436516415360.

The previous prime is 1200420143107. The next prime is 1200420143159. The reversal of 1200420143120 is 213410240021.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1200420143092 and 1200420143101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682056020 + ... + 682057779.

It is an arithmetic number, because the mean of its divisors is an integer number (76117550040).

Almost surely, 2^{1200420143120} is an apocalyptic number.

1200420143120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200420143120 is an abundant number, since it is smaller than the sum of its proper divisors (1844281858480).

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

1200420143120 is a wasteful number, since it uses less digits than its factorization.

1200420143120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364113823 (or 1364113817 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1200420143120 its reverse (213410240021), we get a palindrome (1413830383141).

The spelling of 1200420143120 in words is "one trillion, two hundred billion, four hundred twenty million, one hundred forty-three thousand, one hundred twenty".