72435442 has 16 divisors (see below), whose sum is σ = 110781792. Its totient is φ = 35513280.

The previous prime is 72435431. The next prime is 72435449. The reversal of 72435442 is 24453427.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72435449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31173 + ... + 33415.

It is an arithmetic number, because the mean of its divisors is an integer number (6923862).

Almost surely, 2^72435442 is an apocalyptic number.

72435442 is a deficient number, since it is larger than the sum of its proper divisors (38346350).

72435442 is a wasteful number, since it uses less digits than its factorization.

72435442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553.

The product of its digits is 26880, while the sum is 31.

The square root of 72435442 is about 8510.9013623705. The cubic root of 72435442 is about 416.8537424116.

Adding to 72435442 its reverse (24453427), we get a palindrome (96888869).

The spelling of 72435442 in words is "seventy-two million, four hundred thirty-five thousand, four hundred forty-two".