191948231242 has 8 divisors (see below), whose sum is σ = 304858955556. Its totient is φ = 90328579392.

The previous prime is 191948231231. The next prime is 191948231249. The reversal of 191948231242 is 242132849191.

It can be written as a sum of positive squares in 2 ways, for example, as 191713498201 + 234733041 = 437851^2 + 15321^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 191948231192 and 191948231201.

It is not an unprimeable number, because it can be changed into a prime (191948231249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2822768073 + ... + 2822768140.

Almost surely, 2^191948231242 is an apocalyptic number.

191948231242 is a deficient number, since it is larger than the sum of its proper divisors (112910724314).

191948231242 is a wasteful number, since it uses less digits than its factorization.

191948231242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5645536232.

The product of its digits is 248832, while the sum is 46.

The spelling of 191948231242 in words is "one hundred ninety-one billion, nine hundred forty-eight million, two hundred thirty-one thousand, two hundred forty-two".