125140123 has 2 divisors, whose sum is σ = 125140124. Its totient is φ = 125140122.

The previous prime is 125140109. The next prime is 125140129. The reversal of 125140123 is 321041521.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125140123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125140123.

It is not a weakly prime, because it can be changed into another prime (125140129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62570061 + 62570062.

It is an arithmetic number, because the mean of its divisors is an integer number (62570062).

Almost surely, 2^125140123 is an apocalyptic number.

125140123 is a deficient number, since it is larger than the sum of its proper divisors (1).

125140123 is an equidigital number, since it uses as much as digits as its factorization.

125140123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 125140123 is about 11186.6046233877. The cubic root of 125140123 is about 500.1867608987.

Adding to 125140123 its reverse (321041521), we get a palindrome (446181644).

The spelling of 125140123 in words is "one hundred twenty-five million, one hundred forty thousand, one hundred twenty-three".