72004642 has 8 divisors (see below), whose sum is σ = 113691600. Its totient is φ = 34107444.

The previous prime is 72004631. The next prime is 72004643. The reversal of 72004642 is 24640027.

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 (72004643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 947392 + ... + 947467.

It is an arithmetic number, because the mean of its divisors is an integer number (14211450).

Almost surely, 2^72004642 is an apocalyptic number.

72004642 is a deficient number, since it is larger than the sum of its proper divisors (41686958).

72004642 is a wasteful number, since it uses less digits than its factorization.

72004642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1894880.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 72004642 is about 8485.5549023031. The cubic root of 72004642 is about 416.0257049267.

Adding to 72004642 its reverse (24640027), we get a palindrome (96644669).

The spelling of 72004642 in words is "seventy-two million, four thousand, six hundred forty-two".