181147042 has 8 divisors (see below), whose sum is σ = 279064476. Its totient is φ = 88125552.

The previous prime is 181147039. The next prime is 181147067. The reversal of 181147042 is 240741181.

It can be written as a sum of positive squares in 2 ways, for example, as 180875601 + 271441 = 13449^2 + 521^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 181147042.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1223893 + ... + 1224040.

Almost surely, 2^181147042 is an apocalyptic number.

181147042 is a deficient number, since it is larger than the sum of its proper divisors (97917434).

181147042 is a wasteful number, since it uses less digits than its factorization.

181147042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447972.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 181147042 is about 13459.0877105397. The cubic root of 181147042 is about 565.8184207790.

The spelling of 181147042 in words is "one hundred eighty-one million, one hundred forty-seven thousand, forty-two".