125987042329 has 2 divisors, whose sum is σ = 125987042330. Its totient is φ = 125987042328.

The previous prime is 125987042323. The next prime is 125987042333. The reversal of 125987042329 is 923240789521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105872144400 + 20114897929 = 325380^2 + 141827^2 .

It is a cyclic number.

It is not a de Polignac number, because 125987042329 - 2¹³ = 125987034137 is a prime.

It is not a weakly prime, because it can be changed into another prime (125987042323) 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, 62993521164 + 62993521165.

It is an arithmetic number, because the mean of its divisors is an integer number (62993521165).

Almost surely, 2^125987042329 is an apocalyptic number.

It is an amenable number.

125987042329 is a deficient number, since it is larger than the sum of its proper divisors (1).

125987042329 is an equidigital number, since it uses as much as digits as its factorization.

125987042329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 125987042329 in words is "one hundred twenty-five billion, nine hundred eighty-seven million, forty-two thousand, three hundred twenty-nine".