72701242 has 8 divisors (see below), whose sum is σ = 109848276. Its totient is φ = 36085152.

The previous prime is 72701221. The next prime is 72701243. The reversal of 72701242 is 24210727.

It can be written as a sum of positive squares in 2 ways, for example, as 68211081 + 4490161 = 8259^2 + 2119^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (72701243) 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 3 ways as a sum of consecutive naturals, for example, 132393 + ... + 132940.

Almost surely, 2^72701242 is an apocalyptic number.

72701242 is a deficient number, since it is larger than the sum of its proper divisors (37147034).

72701242 is a wasteful number, since it uses less digits than its factorization.

72701242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265472.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 72701242 is about 8526.5023309678. The cubic root of 72701242 is about 417.3629980637.

Adding to 72701242 its reverse (24210727), we get a palindrome (96911969).

The spelling of 72701242 in words is "seventy-two million, seven hundred one thousand, two hundred forty-two".