72242873 has 2 divisors, whose sum is σ = 72242874. Its totient is φ = 72242872.

The previous prime is 72242867. The next prime is 72242899. The reversal of 72242873 is 37824227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44448889 + 27793984 = 6667^2 + 5272^2 .

It is a cyclic number.

It is not a de Polignac number, because 72242873 - 2¹⁶ = 72177337 is a prime.

It is not a weakly prime, because it can be changed into another prime (72242173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36121436 + 36121437.

It is an arithmetic number, because the mean of its divisors is an integer number (36121437).

Almost surely, 2^72242873 is an apocalyptic number.

It is an amenable number.

72242873 is a deficient number, since it is larger than the sum of its proper divisors (1).

72242873 is an equidigital number, since it uses as much as digits as its factorization.

72242873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 35.

The square root of 72242873 is about 8499.5807543667. The cubic root of 72242873 is about 416.4840138806.

The spelling of 72242873 in words is "seventy-two million, two hundred forty-two thousand, eight hundred seventy-three".