142421561145212 has 12 divisors (see below), whose sum is σ = 249247325262936. Its totient is φ = 71208039641520.

The previous prime is 142421561145187. The next prime is 142421561145239. The reversal of 142421561145212 is 212541165124241.

It is a self number, because there is not a number n which added to its sum of digits gives 142421561145212.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 685115858 + ... + 685323705.

It is an arithmetic number, because the mean of its divisors is an integer number (20770610438578).

Almost surely, 2^{142421561145212} is an apocalyptic number.

It is an amenable number.

142421561145212 is a deficient number, since it is larger than the sum of its proper divisors (106825764117724).

142421561145212 is a wasteful number, since it uses less digits than its factorization.

142421561145212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370465548 (or 1370465546 counting only the distinct ones).

The product of its digits is 153600, while the sum is 41.

The spelling of 142421561145212 in words is "one hundred forty-two trillion, four hundred twenty-one billion, five hundred sixty-one million, one hundred forty-five thousand, two hundred twelve".