125242112077 has 2 divisors, whose sum is σ = 125242112078. Its totient is φ = 125242112076.

The previous prime is 125242111979. The next prime is 125242112081. The reversal of 125242112077 is 770211242521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85789824201 + 39452287876 = 292899^2 + 198626^2 .

It is a cyclic number.

It is not a de Polignac number, because 125242112077 - 2²³ = 125233723469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125242112477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62621056038 + 62621056039.

It is an arithmetic number, because the mean of its divisors is an integer number (62621056039).

Almost surely, 2^125242112077 is an apocalyptic number.

It is an amenable number.

125242112077 is a deficient number, since it is larger than the sum of its proper divisors (1).

125242112077 is an equidigital number, since it uses as much as digits as its factorization.

125242112077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15680, while the sum is 34.

Adding to 125242112077 its reverse (770211242521), we get a palindrome (895453354598).

The spelling of 125242112077 in words is "one hundred twenty-five billion, two hundred forty-two million, one hundred twelve thousand, seventy-seven".