125701643 has 4 divisors (see below), whose sum is σ = 125787000. Its totient is φ = 125616288.

The previous prime is 125701633. The next prime is 125701649. The reversal of 125701643 is 346107521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125701643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125701649) 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, 40430 + ... + 43427.

It is an arithmetic number, because the mean of its divisors is an integer number (31446750).

Almost surely, 2^125701643 is an apocalyptic number.

125701643 is a deficient number, since it is larger than the sum of its proper divisors (85357).

125701643 is an equidigital number, since it uses as much as digits as its factorization.

125701643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85356.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 125701643 is about 11211.6744066174. The cubic root of 125701643 is about 500.9337790279.

The spelling of 125701643 in words is "one hundred twenty-five million, seven hundred one thousand, six hundred forty-three".