127056121 has 2 divisors, whose sum is σ = 127056122. Its totient is φ = 127056120.

The previous prime is 127056103. The next prime is 127056131. The reversal of 127056121 is 121650721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122412096 + 4644025 = 11064^2 + 2155^2 .

It is a cyclic number.

It is not a de Polignac number, because 127056121 - 2¹⁵ = 127023353 is a prime.

It is a super-2 number, since 2×127056121² = 32286515767133282, which contains 22 as substring.

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

It is not a weakly prime, because it can be changed into another prime (127056131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63528060 + 63528061.

It is an arithmetic number, because the mean of its divisors is an integer number (63528061).

Almost surely, 2^127056121 is an apocalyptic number.

It is an amenable number.

127056121 is a deficient number, since it is larger than the sum of its proper divisors (1).

127056121 is an equidigital number, since it uses as much as digits as its factorization.

127056121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 127056121 is about 11271.9173613010. The cubic root of 127056121 is about 502.7265989556.

The spelling of 127056121 in words is "one hundred twenty-seven million, fifty-six thousand, one hundred twenty-one".