72387123 has 8 divisors (see below), whose sum is σ = 97511568. Its totient is φ = 47760384.

The previous prime is 72387113. The next prime is 72387143. The reversal of 72387123 is 32178327.

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

It is not a de Polignac number, because 72387123 - 2¹⁸ = 72124979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72387113) 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, 124086 + ... + 124667.

It is an arithmetic number, because the mean of its divisors is an integer number (12188946).

Almost surely, 2^72387123 is an apocalyptic number.

72387123 is a deficient number, since it is larger than the sum of its proper divisors (25124445).

72387123 is a wasteful number, since it uses less digits than its factorization.

72387123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248853.

The product of its digits is 14112, while the sum is 33.

The square root of 72387123 is about 8508.0622353154. The cubic root of 72387123 is about 416.7610325644.

The spelling of 72387123 in words is "seventy-two million, three hundred eighty-seven thousand, one hundred twenty-three".