127012145 has 8 divisors (see below), whose sum is σ = 164138856. Its totient is φ = 93793536.

The previous prime is 127012139. The next prime is 127012147. The reversal of 127012145 is 541210721.

It can be written as a sum of positive squares in 4 ways, for example, as 6210064 + 120802081 = 2492^2 + 10991^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 127012145 - 2¹⁴ = 126995761 is a prime.

It is a super-2 number, since 2×127012145² = 32264169955002050, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 127012145.

It is not an unprimeable number, because it can be changed into a prime (127012147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 976952 + ... + 977081.

It is an arithmetic number, because the mean of its divisors is an integer number (20517357).

Almost surely, 2^127012145 is an apocalyptic number.

It is an amenable number.

127012145 is a deficient number, since it is larger than the sum of its proper divisors (37126711).

127012145 is a wasteful number, since it uses less digits than its factorization.

127012145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954051.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 127012145 is about 11269.9665039431. The cubic root of 127012145 is about 502.6685918958.

Adding to 127012145 its reverse (541210721), we get a palindrome (668222866).

The spelling of 127012145 in words is "one hundred twenty-seven million, twelve thousand, one hundred forty-five".