72146107 has 4 divisors (see below), whose sum is σ = 78704856. Its totient is φ = 65587360.

The previous prime is 72146099. The next prime is 72146111. The reversal of 72146107 is 70164127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70164127 = 11 ⋅6378557.

It is a cyclic number.

It is not a de Polignac number, because 72146107 - 2³ = 72146099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72146117) 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, 3279358 + ... + 3279379.

It is an arithmetic number, because the mean of its divisors is an integer number (19676214).

Almost surely, 2^72146107 is an apocalyptic number.

72146107 is a deficient number, since it is larger than the sum of its proper divisors (6558749).

72146107 is a wasteful number, since it uses less digits than its factorization.

72146107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6558748.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 72146107 is about 8493.8864484993. The cubic root of 72146107 is about 416.2979770772.

The spelling of 72146107 in words is "seventy-two million, one hundred forty-six thousand, one hundred seven".