125701123 has 4 divisors (see below), whose sum is σ = 125745400. Its totient is φ = 125656848.

The previous prime is 125701091. The next prime is 125701127. The reversal of 125701123 is 321107521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321107521 = 7 ⋅45872503.

It is a cyclic number.

It is not a de Polignac number, because 125701123 - 2⁵ = 125701091 is a prime.

It is a super-2 number, since 2×125701123² = 31601544646922258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125701094 and 125701103.

It is not an unprimeable number, because it can be changed into a prime (125701127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17565 + ... + 23662.

It is an arithmetic number, because the mean of its divisors is an integer number (31436350).

Almost surely, 2^125701123 is an apocalyptic number.

125701123 is a deficient number, since it is larger than the sum of its proper divisors (44277).

125701123 is an equidigital number, since it uses as much as digits as its factorization.

125701123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44276.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 125701123 is about 11211.6512164801. The cubic root of 125701123 is about 500.9330882760.

Adding to 125701123 its reverse (321107521), we get a palindrome (446808644).

The spelling of 125701123 in words is "one hundred twenty-five million, seven hundred one thousand, one hundred twenty-three".