125234729 has 4 divisors (see below), whose sum is σ = 125595984. Its totient is φ = 124873476.

The previous prime is 125234717. The next prime is 125234741. The reversal of 125234729 is 927432521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 927432521 = 12107 ⋅76603.

It is an interprime number because it is at equal distance from previous prime (125234717) and next prime (125234741).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125234729 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125234749) 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 in 3 ways as a sum of consecutive naturals, for example, 180107 + ... + 180800.

It is an arithmetic number, because the mean of its divisors is an integer number (31398996).

Almost surely, 2^125234729 is an apocalyptic number.

It is an amenable number.

125234729 is a deficient number, since it is larger than the sum of its proper divisors (361255).

125234729 is an equidigital number, since it uses as much as digits as its factorization.

125234729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361254.

The product of its digits is 30240, while the sum is 35.

The square root of 125234729 is about 11190.8323640380. The cubic root of 125234729 is about 500.3127763012.

The spelling of 125234729 in words is "one hundred twenty-five million, two hundred thirty-four thousand, seven hundred twenty-nine".