181056142 has 4 divisors (see below), whose sum is σ = 271584216. Its totient is φ = 90528070.

The previous prime is 181056119. The next prime is 181056143. The reversal of 181056142 is 241650181.

181056142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241650181 = 683 ⋅353807.

It is a self number, because there is not a number n which added to its sum of digits gives 181056142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181056143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45264034 + ... + 45264037.

It is an arithmetic number, because the mean of its divisors is an integer number (67896054).

Almost surely, 2^181056142 is an apocalyptic number.

181056142 is a deficient number, since it is larger than the sum of its proper divisors (90528074).

181056142 is an equidigital number, since it uses as much as digits as its factorization.

181056142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90528073.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 181056142 is about 13455.7103863007. The cubic root of 181056142 is about 565.7237619513.

The spelling of 181056142 in words is "one hundred eighty-one million, fifty-six thousand, one hundred forty-two".