125984643 has 4 divisors (see below), whose sum is σ = 167979528. Its totient is φ = 83989760.

The previous prime is 125984623. The next prime is 125984653. The reversal of 125984643 is 346489521.

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 125984643 - 2¹⁴ = 125968259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125984595 and 125984604.

It is not an unprimeable number, because it can be changed into a prime (125984623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20997438 + ... + 20997443.

It is an arithmetic number, because the mean of its divisors is an integer number (41994882).

Almost surely, 2^125984643 is an apocalyptic number.

125984643 is a deficient number, since it is larger than the sum of its proper divisors (41994885).

125984643 is an equidigital number, since it uses as much as digits as its factorization.

125984643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41994884.

The product of its digits is 207360, while the sum is 42.

The square root of 125984643 is about 11224.2880843286. The cubic root of 125984643 is about 501.3094251514.

The spelling of 125984643 in words is "one hundred twenty-five million, nine hundred eighty-four thousand, six hundred forty-three".