191478042 has 24 divisors (see below), whose sum is σ = 474136416. Its totient is φ = 54707976.

The previous prime is 191478019. The next prime is 191478061. The reversal of 191478042 is 240874191.

It is a junction number, because it is equal to n+sod(n) for n = 191477988 and 191478006.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 759708 + ... + 759959.

It is an arithmetic number, because the mean of its divisors is an integer number (19755684).

Almost surely, 2^191478042 is an apocalyptic number.

191478042 is an abundant number, since it is smaller than the sum of its proper divisors (282658374).

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

191478042 is a wasteful number, since it uses less digits than its factorization.

191478042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519682 (or 1519679 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 191478042 is about 13837.5591055648. The cubic root of 191478042 is about 576.3765802773.

The spelling of 191478042 in words is "one hundred ninety-one million, four hundred seventy-eight thousand, forty-two".