181276242 has 32 divisors (see below), whose sum is σ = 416102400. Its totient is φ = 51573648.

The previous prime is 181276241. The next prime is 181276243. The reversal of 181276242 is 242672181.

It is an interprime number because it is at equal distance from previous prime (181276241) and next prime (181276243).

It is a super-2 number, since 2×181276242² = 65722151827285128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (181276241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1009 + ... + 19067.

It is an arithmetic number, because the mean of its divisors is an integer number (13003200).

Almost surely, 2^181276242 is an apocalyptic number.

181276242 is an abundant number, since it is smaller than the sum of its proper divisors (234826158).

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

181276242 is a wasteful number, since it uses less digits than its factorization.

181276242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18310.

The product of its digits is 10752, while the sum is 33.

The square root of 181276242 is about 13463.8865859751. The cubic root of 181276242 is about 565.9529088833.

The spelling of 181276242 in words is "one hundred eighty-one million, two hundred seventy-six thousand, two hundred forty-two".