125130491 has 2 divisors, whose sum is σ = 125130492. Its totient is φ = 125130490.

The previous prime is 125130451. The next prime is 125130503. The reversal of 125130491 is 194031521.

It is a strong prime.

It is an emirp because it is prime and its reverse (194031521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125130491 - 2⁶ = 125130427 is a prime.

It is a Chen prime.

It is equal to p_7117109 and since 125130491 and 7117109 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125130491.

It is not a weakly prime, because it can be changed into another prime (125130451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62565245 + 62565246.

It is an arithmetic number, because the mean of its divisors is an integer number (62565246).

Almost surely, 2^125130491 is an apocalyptic number.

125130491 is a deficient number, since it is larger than the sum of its proper divisors (1).

125130491 is an equidigital number, since it uses as much as digits as its factorization.

125130491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 125130491 is about 11186.1741002007. The cubic root of 125130491 is about 500.1739274914.

The spelling of 125130491 in words is "one hundred twenty-five million, one hundred thirty thousand, four hundred ninety-one".