127730145 has 16 divisors (see below), whose sum is σ = 205725312. Its totient is φ = 67670400.

The previous prime is 127730143. The next prime is 127730149. The reversal of 127730145 is 541037721.

It is not a de Polignac number, because 127730145 - 2¹ = 127730143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (127730143) 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 in 15 ways as a sum of consecutive naturals, for example, 25932 + ... + 30461.

It is an arithmetic number, because the mean of its divisors is an integer number (12857832).

Almost surely, 2^127730145 is an apocalyptic number.

127730145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127730145 is a deficient number, since it is larger than the sum of its proper divisors (77995167).

127730145 is a wasteful number, since it uses less digits than its factorization.

127730145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56552.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 127730145 is about 11301.7761878388. The cubic root of 127730145 is about 503.6140082846.

Adding to 127730145 its reverse (541037721), we get a palindrome (668767866).

The spelling of 127730145 in words is "one hundred twenty-seven million, seven hundred thirty thousand, one hundred forty-five".