1210440142140 has 24 divisors (see below), whose sum is σ = 3389232398160. Its totient is φ = 322784037888.

The previous prime is 1210440142129. The next prime is 1210440142147. The reversal of 1210440142140 is 412410440121.

It is a self number, because there is not a number n which added to its sum of digits gives 1210440142140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210440142147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10087001125 + ... + 10087001244.

It is an arithmetic number, because the mean of its divisors is an integer number (141218016590).

Almost surely, 2^{1210440142140} is an apocalyptic number.

1210440142140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210440142140 is an abundant number, since it is smaller than the sum of its proper divisors (2178792256020).

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

1210440142140 is a wasteful number, since it uses less digits than its factorization.

1210440142140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20174002381 (or 20174002379 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 1210440142140 its reverse (412410440121), we get a palindrome (1622850582261).

The spelling of 1210440142140 in words is "one trillion, two hundred ten billion, four hundred forty million, one hundred forty-two thousand, one hundred forty".