125706019 has 2 divisors, whose sum is σ = 125706020. Its totient is φ = 125706018.

The previous prime is 125706013. The next prime is 125706101. The reversal of 125706019 is 910607521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125706019 - 2⁹ = 125705507 is a prime.

It is a super-2 number, since 2×125706019² = 31604006425656722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125706013) 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 as a sum of consecutive naturals, namely, 62853009 + 62853010.

It is an arithmetic number, because the mean of its divisors is an integer number (62853010).

Almost surely, 2^125706019 is an apocalyptic number.

125706019 is a deficient number, since it is larger than the sum of its proper divisors (1).

125706019 is an equidigital number, since it uses as much as digits as its factorization.

125706019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 125706019 is about 11211.8695586419. The cubic root of 125706019 is about 500.9395918948.

The spelling of 125706019 in words is "one hundred twenty-five million, seven hundred six thousand, nineteen".