125642063 has 4 divisors (see below), whose sum is σ = 126937440. Its totient is φ = 124346688.

The previous prime is 125642059. The next prime is 125642113. The reversal of 125642063 is 360246521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125642063 - 2² = 125642059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125642263) 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 in 3 ways as a sum of consecutive naturals, for example, 647543 + ... + 647736.

It is an arithmetic number, because the mean of its divisors is an integer number (31734360).

Almost surely, 2^125642063 is an apocalyptic number.

125642063 is a deficient number, since it is larger than the sum of its proper divisors (1295377).

125642063 is an equidigital number, since it uses as much as digits as its factorization.

125642063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295376.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 125642063 is about 11209.0170398657. The cubic root of 125642063 is about 500.8546224088.

Adding to 125642063 its reverse (360246521), we get a palindrome (485888584).

The spelling of 125642063 in words is "one hundred twenty-five million, six hundred forty-two thousand, sixty-three".