125743603 has 2 divisors, whose sum is σ = 125743604. Its totient is φ = 125743602.

The previous prime is 125743601. The next prime is 125743609. The reversal of 125743603 is 306347521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125743603 - 2¹ = 125743601 is a prime.

It is a super-2 number, since 2×125743603² = 31622907390843218, which contains 22 as substring.

Together with 125743601, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (125743601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62871801 + 62871802.

It is an arithmetic number, because the mean of its divisors is an integer number (62871802).

Almost surely, 2^125743603 is an apocalyptic number.

125743603 is a deficient number, since it is larger than the sum of its proper divisors (1).

125743603 is an equidigital number, since it uses as much as digits as its factorization.

125743603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 125743603 is about 11213.5455142430. The cubic root of 125743603 is about 500.9895111104.

The spelling of 125743603 in words is "one hundred twenty-five million, seven hundred forty-three thousand, six hundred three".