125246643 has 4 divisors (see below), whose sum is σ = 166995528. Its totient is φ = 83497760.

The previous prime is 125246623. The next prime is 125246657. The reversal of 125246643 is 346642521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346642521 = 3 ⋅115547507.

It is a cyclic number.

It is not a de Polignac number, because 125246643 - 2¹⁸ = 124984499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125246623) 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, 20874438 + ... + 20874443.

It is an arithmetic number, because the mean of its divisors is an integer number (41748882).

Almost surely, 2^125246643 is an apocalyptic number.

125246643 is a deficient number, since it is larger than the sum of its proper divisors (41748885).

125246643 is an equidigital number, since it uses as much as digits as its factorization.

125246643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41748884.

The product of its digits is 34560, while the sum is 33.

The square root of 125246643 is about 11191.3646620955. The cubic root of 125246643 is about 500.3286412758.

It can be divided in two parts, 1252 and 46643, that added together give a triangular number (47895 = T₃₀₉).

The spelling of 125246643 in words is "one hundred twenty-five million, two hundred forty-six thousand, six hundred forty-three".