191435042 has 16 divisors (see below), whose sum is σ = 294157440. Its totient is φ = 93395088.

The previous prime is 191435039. The next prime is 191435047. The reversal of 191435042 is 240534191.

It is a junction number, because it is equal to n+sod(n) for n = 191434996 and 191435014.

It is not an unprimeable number, because it can be changed into a prime (191435047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29684 + ... + 35552.

It is an arithmetic number, because the mean of its divisors is an integer number (18384840).

Almost surely, 2^191435042 is an apocalyptic number.

191435042 is a deficient number, since it is larger than the sum of its proper divisors (102722398).

191435042 is a wasteful number, since it uses less digits than its factorization.

191435042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6265.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 191435042 is about 13836.0052760903. The cubic root of 191435042 is about 576.3334316423. Note that the first 3 decimals are identical.

The spelling of 191435042 in words is "one hundred ninety-one million, four hundred thirty-five thousand, forty-two".