1205104050040 has 64 divisors (see below), whose sum is σ = 2970359424000. Its totient is φ = 436386061440.

The previous prime is 1205104049887. The next prime is 1205104050067. The reversal of 1205104050040 is 400504015021.

It is a super-3 number, since 3×1205104050040³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1205104049993 and 1205104050020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5624700 + ... + 5835019.

It is an arithmetic number, because the mean of its divisors is an integer number (46411866000).

Almost surely, 2^{1205104050040} is an apocalyptic number.

1205104050040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1205104050040 is an abundant number, since it is smaller than the sum of its proper divisors (1765255373960).

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

1205104050040 is a wasteful number, since it uses less digits than its factorization.

1205104050040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11459980 (or 11459976 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 1205104050040 its reverse (400504015021), we get a palindrome (1605608065061).

The spelling of 1205104050040 in words is "one trillion, two hundred five billion, one hundred four million, fifty thousand, forty".