127155145 has 16 divisors (see below), whose sum is σ = 168334992. Its totient is φ = 91607040.

The previous prime is 127155143. The next prime is 127155157. The reversal of 127155145 is 541551721.

It can be written as a sum of positive squares in 8 ways, for example, as 63107136 + 64048009 = 7944^2 + 8003^2 .

It is not a de Polignac number, because 127155145 - 2¹ = 127155143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127155143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21192 + ... + 26521.

It is an arithmetic number, because the mean of its divisors is an integer number (10520937).

Almost surely, 2^127155145 is an apocalyptic number.

It is an amenable number.

127155145 is a deficient number, since it is larger than the sum of its proper divisors (41179847).

127155145 is a wasteful number, since it uses less digits than its factorization.

127155145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47772.

The product of its digits is 7000, while the sum is 31.

The square root of 127155145 is about 11276.3090149215. The cubic root of 127155145 is about 502.8571687412.

The spelling of 127155145 in words is "one hundred twenty-seven million, one hundred fifty-five thousand, one hundred forty-five".