72149107 has 2 divisors, whose sum is σ = 72149108. Its totient is φ = 72149106.

The previous prime is 72149087. The next prime is 72149111. The reversal of 72149107 is 70194127.

It is a strong prime.

It is an emirp because it is prime and its reverse (70194127) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72149107 is a prime.

It is equal to p_4236961 and since 72149107 and 4236961 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (72149117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36074553 + 36074554.

It is an arithmetic number, because the mean of its divisors is an integer number (36074554).

Almost surely, 2^72149107 is an apocalyptic number.

72149107 is a deficient number, since it is larger than the sum of its proper divisors (1).

72149107 is an equidigital number, since it uses as much as digits as its factorization.

72149107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 72149107 is about 8494.0630442680. The cubic root of 72149107 is about 416.3037472043.

The spelling of 72149107 in words is "seventy-two million, one hundred forty-nine thousand, one hundred seven".