72754042 has 4 divisors (see below), whose sum is σ = 109131066. Its totient is φ = 36377020.

The previous prime is 72754039. The next prime is 72754043. The reversal of 72754042 is 24045727.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 72743841 + 10201 = 8529^2 + 101^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 72753995 and 72754013.

It is not an unprimeable number, because it can be changed into a prime (72754043) 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 as a sum of consecutive naturals, namely, 18188509 + ... + 18188512.

Almost surely, 2^72754042 is an apocalyptic number.

72754042 is a deficient number, since it is larger than the sum of its proper divisors (36377024).

72754042 is a wasteful number, since it uses less digits than its factorization.

72754042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36377023.

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 72754042 is about 8529.5979975612. The cubic root of 72754042 is about 417.4640116229.

Adding to 72754042 its reverse (24045727), we get a palindrome (96799769).

The spelling of 72754042 in words is "seventy-two million, seven hundred fifty-four thousand, forty-two".