125734123 has 4 divisors (see below), whose sum is σ = 131200848. Its totient is φ = 120267400.

The previous prime is 125734121. The next prime is 125734129. The reversal of 125734123 is 321437521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321437521 = 6911 ⋅46511.

It is a cyclic number.

It is not a de Polignac number, because 125734123 - 2¹ = 125734121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125734091 and 125734100.

It is not an unprimeable number, because it can be changed into a prime (125734121) 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, 2733328 + ... + 2733373.

It is an arithmetic number, because the mean of its divisors is an integer number (32800212).

Almost surely, 2^125734123 is an apocalyptic number.

125734123 is a deficient number, since it is larger than the sum of its proper divisors (5466725).

125734123 is an equidigital number, since it uses as much as digits as its factorization.

125734123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5466724.

The product of its digits is 5040, while the sum is 28.

The square root of 125734123 is about 11213.1228032159. The cubic root of 125734123 is about 500.9769206755.

The spelling of 125734123 in words is "one hundred twenty-five million, seven hundred thirty-four thousand, one hundred twenty-three".