191085542 has 16 divisors (see below), whose sum is σ = 308635920. Its totient is φ = 88397568.

The previous prime is 191085533. The next prime is 191085569. The reversal of 191085542 is 245580191.

191085542 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×191085542² = 73027368722867528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45623 + ... + 49634.

It is an arithmetic number, because the mean of its divisors is an integer number (19289745).

Almost surely, 2^191085542 is an apocalyptic number.

191085542 is a deficient number, since it is larger than the sum of its proper divisors (117550378).

191085542 is a wasteful number, since it uses less digits than its factorization.

191085542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95335.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 191085542 is about 13823.3694155947. The cubic root of 191085542 is about 575.9824836334.

The spelling of 191085542 in words is "one hundred ninety-one million, eighty-five thousand, five hundred forty-two".