42094872242 has 4 divisors (see below), whose sum is σ = 63142308366. Its totient is φ = 21047436120.

The previous prime is 42094872233. The next prime is 42094872271. The reversal of 42094872242 is 24227849024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 31641650161 + 10453222081 = 177881^2 + 102241^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42094872193 and 42094872202.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10523718059 + ... + 10523718062.

Almost surely, 2^42094872242 is an apocalyptic number.

42094872242 is a deficient number, since it is larger than the sum of its proper divisors (21047436124).

42094872242 is a wasteful number, since it uses less digits than its factorization.

42094872242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21047436123.

The product of its (nonzero) digits is 516096, while the sum is 44.

The spelling of 42094872242 in words is "forty-two billion, ninety-four million, eight hundred seventy-two thousand, two hundred forty-two".