42123520242 has 24 divisors (see below), whose sum is σ = 91324413180. Its totient is φ = 14032437120.

The previous prime is 42123520199. The next prime is 42123520267. The reversal of 42123520242 is 24202532124.

42123520242 is a `hidden beast` number, since 421 + 2 + 35 + 202 + 4 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 29408477121 + 12715043121 = 171489^2 + 112761^2 .

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 11 ways as a sum of consecutive naturals, for example, 698259 + ... + 756182.

Almost surely, 2^42123520242 is an apocalyptic number.

42123520242 is an abundant number, since it is smaller than the sum of its proper divisors (49200892938).

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

42123520242 is a wasteful number, since it uses less digits than its factorization.

42123520242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456058 (or 1456055 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The spelling of 42123520242 in words is "forty-two billion, one hundred twenty-three million, five hundred twenty thousand, two hundred forty-two".