156212142642 has 48 divisors (see below), whose sum is σ = 356492223360. Its totient is φ = 49299839136.

The previous prime is 156212142641. The next prime is 156212142643. The reversal of 156212142642 is 246241212651.

156212142642 is a `hidden beast` number, since 1 + 5 + 6 + 2 + 1 + 2 + 1 + 4 + 2 + 642 = 666.

156212142642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (156212142641) and next prime (156212142643).

It is a junction number, because it is equal to n+sod(n) for n = 156212142597 and 156212142606.

It is not an unprimeable number, because it can be changed into a prime (156212142641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 420343 + ... + 699365.

It is an arithmetic number, because the mean of its divisors is an integer number (7426921320).

Almost surely, 2^156212142642 is an apocalyptic number.

156212142642 is an abundant number, since it is smaller than the sum of its proper divisors (200280080718).

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

156212142642 is a wasteful number, since it uses less digits than its factorization.

156212142642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280687 (or 280684 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The spelling of 156212142642 in words is "one hundred fifty-six billion, two hundred twelve million, one hundred forty-two thousand, six hundred forty-two".