125820743 has 2 divisors, whose sum is σ = 125820744. Its totient is φ = 125820742.

The previous prime is 125820727. The next prime is 125820749. The reversal of 125820743 is 347028521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125820743 - 2⁴ = 125820727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125820749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62910371 + 62910372.

It is an arithmetic number, because the mean of its divisors is an integer number (62910372).

Almost surely, 2^125820743 is an apocalyptic number.

125820743 is a deficient number, since it is larger than the sum of its proper divisors (1).

125820743 is an equidigital number, since it uses as much as digits as its factorization.

125820743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 125820743 is about 11216.9845769708. The cubic root of 125820743 is about 501.0919376086.

The spelling of 125820743 in words is "one hundred twenty-five million, eight hundred twenty thousand, seven hundred forty-three".