1240203204406 has 8 divisors (see below), whose sum is σ = 1882718117784. Its totient is φ = 612630498480.

The previous prime is 1240203204403. The next prime is 1240203204421. The reversal of 1240203204406 is 6044023020421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240203204403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3735551655 + ... + 3735551986.

It is an arithmetic number, because the mean of its divisors is an integer number (235339764723).

Almost surely, 2^{1240203204406} is an apocalyptic number.

1240203204406 is a deficient number, since it is larger than the sum of its proper divisors (642514913378).

1240203204406 is an equidigital number, since it uses as much as digits as its factorization.

1240203204406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7471103726.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 1240203204406 its reverse (6044023020421), we get a palindrome (7284226224827).

The spelling of 1240203204406 in words is "one trillion, two hundred forty billion, two hundred three million, two hundred four thousand, four hundred six".