72018542 has 8 divisors (see below), whose sum is σ = 111753000. Its totient is φ = 34767544.

The previous prime is 72018503. The next prime is 72018547. The reversal of 72018542 is 24581027.

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

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72018547) 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, 620792 + ... + 620907.

It is an arithmetic number, because the mean of its divisors is an integer number (13969125).

Almost surely, 2^72018542 is an apocalyptic number.

72018542 is a deficient number, since it is larger than the sum of its proper divisors (39734458).

72018542 is a wasteful number, since it uses less digits than its factorization.

72018542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241730.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 72018542 is about 8486.3739017321. The cubic root of 72018542 is about 416.0524735028.

Adding to 72018542 its reverse (24581027), we get a palindrome (96599569).

The spelling of 72018542 in words is "seventy-two million, eighteen thousand, five hundred forty-two".