127121741 has 2 divisors, whose sum is σ = 127121742. Its totient is φ = 127121740.

The previous prime is 127121707. The next prime is 127121777. The reversal of 127121741 is 147121721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126652516 + 469225 = 11254^2 + 685^2 .

It is an emirp because it is prime and its reverse (147121721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127121741 - 2¹⁴ = 127105357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 127121741.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127121791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63560870 + 63560871.

It is an arithmetic number, because the mean of its divisors is an integer number (63560871).

Almost surely, 2^127121741 is an apocalyptic number.

It is an amenable number.

127121741 is a deficient number, since it is larger than the sum of its proper divisors (1).

127121741 is an equidigital number, since it uses as much as digits as its factorization.

127121741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 784, while the sum is 26.

The square root of 127121741 is about 11274.8277592165. The cubic root of 127121741 is about 502.8131309060.

The spelling of 127121741 in words is "one hundred twenty-seven million, one hundred twenty-one thousand, seven hundred forty-one".