1210104120040 has 64 divisors (see below), whose sum is σ = 2786884911360. Its totient is φ = 472643808000.

The previous prime is 1210104119977. The next prime is 1210104120047. The reversal of 1210104120040 is 400214010121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1210104119996 and 1210104120023.

It is not an unprimeable number, because it can be changed into a prime (1210104120047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5756790 + ... + 5963290.

It is an arithmetic number, because the mean of its divisors is an integer number (43545076740).

Almost surely, 2^{1210104120040} is an apocalyptic number.

1210104120040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1210104120040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1393442455680).

1210104120040 is an abundant number, since it is smaller than the sum of its proper divisors (1576780791320).

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

1210104120040 is a wasteful number, since it uses less digits than its factorization.

1210104120040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209962 (or 209958 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1210104120040 its reverse (400214010121), we get a palindrome (1610318130161).

The spelling of 1210104120040 in words is "one trillion, two hundred ten billion, one hundred four million, one hundred twenty thousand, forty".