125021023 has 2 divisors, whose sum is σ = 125021024. Its totient is φ = 125021022.

The previous prime is 125021003. The next prime is 125021027. The reversal of 125021023 is 320120521.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125021023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125020988 and 125021006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125021027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62510511 + 62510512.

It is an arithmetic number, because the mean of its divisors is an integer number (62510512).

Almost surely, 2^125021023 is an apocalyptic number.

125021023 is a deficient number, since it is larger than the sum of its proper divisors (1).

125021023 is an equidigital number, since it uses as much as digits as its factorization.

125021023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 125021023 is about 11181.2800251134. The cubic root of 125021023 is about 500.0280290954.

Adding to 125021023 its reverse (320120521), we get a palindrome (445141544).

The spelling of 125021023 in words is "one hundred twenty-five million, twenty-one thousand, twenty-three".