139181224900 has 27 divisors (see below), whose sum is σ = 302031353869. Its totient is φ = 55670997680.

The previous prime is 139181224883. The next prime is 139181224901. The reversal of 139181224900 is 9422181931.

It is a happy number.

The square root of 139181224900 is 373070.

It is a perfect power (a square), and thus also a powerful number.

139181224900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 50105240964 + 89075983936 = 223842^2 + 298456^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139181224901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3712047 + ... + 3749353.

Almost surely, 2^139181224900 is an apocalyptic number.

139181224900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139181224900 is the 373070-th square number.

It is an amenable number.

139181224900 is an abundant number, since it is smaller than the sum of its proper divisors (162850128969).

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

139181224900 is an frugal number, since it uses more digits than its factorization.

139181224900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74628 (or 37314 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The spelling of 139181224900 in words is "one hundred thirty-nine billion, one hundred eighty-one million, two hundred twenty-four thousand, nine hundred".