212420102142 has 32 divisors (see below), whose sum is σ = 449911766304. Its totient is φ = 66629606400.

The previous prime is 212420102123. The next prime is 212420102179. The reversal of 212420102142 is 241201024212.

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 15 ways as a sum of consecutive naturals, for example, 390792 + ... + 759972.

It is an arithmetic number, because the mean of its divisors is an integer number (14059742697).

Almost surely, 2^212420102142 is an apocalyptic number.

212420102142 is an abundant number, since it is smaller than the sum of its proper divisors (237491664162).

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

212420102142 is a wasteful number, since it uses less digits than its factorization.

212420102142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374844.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 212420102142 its reverse (241201024212), we get a palindrome (453621126354).

The spelling of 212420102142 in words is "two hundred twelve billion, four hundred twenty million, one hundred two thousand, one hundred forty-two".