181242804 has 48 divisors (see below), whose sum is σ = 430133760. Its totient is φ = 59389440.

The previous prime is 181242799. The next prime is 181242811. The reversal of 181242804 is 408242181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237784 + ... + 238544.

It is an arithmetic number, because the mean of its divisors is an integer number (8961120).

Almost surely, 2^181242804 is an apocalyptic number.

It is an amenable number.

181242804 is an abundant number, since it is smaller than the sum of its proper divisors (248890956).

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

181242804 is a wasteful number, since it uses less digits than its factorization.

181242804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 181242804 is about 13462.6447624529. The cubic root of 181242804 is about 565.9181084100.

Adding to 181242804 its reverse (408242181), we get a palindrome (589484985).

The spelling of 181242804 in words is "one hundred eighty-one million, two hundred forty-two thousand, eight hundred four".