1200040421340 has 96 divisors (see below), whose sum is σ = 3564597201984. Its totient is φ = 300608389120.

The previous prime is 1200040421317. The next prime is 1200040421341. The reversal of 1200040421340 is 431240400021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200040421341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 597669 + ... + 1660508.

It is an arithmetic number, because the mean of its divisors is an integer number (37131220854).

Almost surely, 2^{1200040421340} is an apocalyptic number.

1200040421340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200040421340 is an abundant number, since it is smaller than the sum of its proper divisors (2364556780644).

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

1200040421340 is a wasteful number, since it uses less digits than its factorization.

1200040421340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2258727 (or 2258725 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 1200040421340 its reverse (431240400021), we get a palindrome (1631280821361).

The spelling of 1200040421340 in words is "one trillion, two hundred billion, forty million, four hundred twenty-one thousand, three hundred forty".