194756174807042 has 4 divisors (see below), whose sum is σ = 292134262210566. Its totient is φ = 97378087403520.

The previous prime is 194756174806969. The next prime is 194756174807081. The reversal of 194756174807042 is 240708471657491.

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., 158716936120681 + 36039238686361 = 12598291^2 + 6003269^2 .

It is a super-2 number, since 2×194756174807042² (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 194756174807042.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48689043701759 + ... + 48689043701762.

Almost surely, 2^{194756174807042} is an apocalyptic number.

194756174807042 is a deficient number, since it is larger than the sum of its proper divisors (97378087403524).

194756174807042 is an equidigital number, since it uses as much as digits as its factorization.

194756174807042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97378087403523.

The product of its (nonzero) digits is 94832640, while the sum is 65.

The spelling of 194756174807042 in words is "one hundred ninety-four trillion, seven hundred fifty-six billion, one hundred seventy-four million, eight hundred seven thousand, forty-two".