1200042004100 has 18 divisors (see below), whose sum is σ = 2604091149114. Its totient is φ = 480016801600.

The previous prime is 1200042004037. The next prime is 1200042004103. The reversal of 1200042004100 is 14002400021.

It can be written as a sum of positive squares in 3 ways, for example, as 9900648004 + 1190141356096 = 99502^2 + 1090936^2 .

It is not an unprimeable number, because it can be changed into a prime (1200042004103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6000209921 + ... + 6000210120.

Almost surely, 2^{1200042004100} is an apocalyptic number.

1200042004100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200042004100 is an abundant number, since it is smaller than the sum of its proper divisors (1404049145014).

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

1200042004100 is a wasteful number, since it uses less digits than its factorization.

1200042004100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12000420055 (or 12000420048 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1200042004100 its reverse (14002400021), we get a palindrome (1214044404121).

The spelling of 1200042004100 in words is "one trillion, two hundred billion, forty-two million, four thousand, one hundred".