72201124 has 12 divisors (see below), whose sum is σ = 127470924. Its totient is φ = 35780864.

The previous prime is 72201109. The next prime is 72201131. The reversal of 72201124 is 42110227.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4665600 + 67535524 = 2160^2 + 8218^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 79417 + ... + 80320.

It is an arithmetic number, because the mean of its divisors is an integer number (10622577).

Almost surely, 2^72201124 is an apocalyptic number.

It is an amenable number.

72201124 is a deficient number, since it is larger than the sum of its proper divisors (55269800).

72201124 is a wasteful number, since it uses less digits than its factorization.

72201124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159854 (or 159852 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 72201124 is about 8497.1244547788. The cubic root of 72201124 is about 416.4037700175.

The spelling of 72201124 in words is "seventy-two million, two hundred one thousand, one hundred twenty-four".