142421421555212 has 12 divisors (see below), whose sum is σ = 249990471070536. Its totient is φ = 70995572677920.

The previous prime is 142421421555199. The next prime is 142421421555247. The reversal of 142421421555212 is 212555124124241.

It is a super-2 number, since 2×142421421555212² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142421421555212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53784523433 + ... + 53784526080.

It is an arithmetic number, because the mean of its divisors is an integer number (20832539255878).

Almost surely, 2^{142421421555212} is an apocalyptic number.

It is an amenable number.

142421421555212 is a deficient number, since it is larger than the sum of its proper divisors (107569049515324).

142421421555212 is a wasteful number, since it uses less digits than its factorization.

142421421555212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107569049848 (or 107569049846 counting only the distinct ones).

The product of its digits is 256000, while the sum is 41.

Adding to 142421421555212 its reverse (212555124124241), we get a palindrome (354976545679453).

The spelling of 142421421555212 in words is "one hundred forty-two trillion, four hundred twenty-one billion, four hundred twenty-one million, five hundred fifty-five thousand, two hundred twelve".