72742327 has 4 divisors (see below), whose sum is σ = 83134096. Its totient is φ = 62350560.

The previous prime is 72742309. The next prime is 72742363. The reversal of 72742327 is 72324727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72324727 = 1319 ⋅54833.

It is a cyclic number.

It is not a de Polignac number, because 72742327 - 2¹¹ = 72740279 is a prime.

It is a super-2 number, since 2×72742327² = 10582892274749858, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72742292 and 72742301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72742387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5195874 + ... + 5195887.

It is an arithmetic number, because the mean of its divisors is an integer number (20783524).

Almost surely, 2^72742327 is an apocalyptic number.

72742327 is a deficient number, since it is larger than the sum of its proper divisors (10391769).

72742327 is a wasteful number, since it uses less digits than its factorization.

72742327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10391768.

The product of its digits is 32928, while the sum is 34.

The square root of 72742327 is about 8528.9112435293. The cubic root of 72742327 is about 417.4416034594.

The spelling of 72742327 in words is "seventy-two million, seven hundred forty-two thousand, three hundred twenty-seven".