125123438 has 24 divisors (see below), whose sum is σ = 209404776. Its totient is φ = 56018160.

The previous prime is 125123437. The next prime is 125123441. The reversal of 125123438 is 834321521.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 125123438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125123437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12356 + ... + 20072.

It is an arithmetic number, because the mean of its divisors is an integer number (8725199).

Almost surely, 2^125123438 is an apocalyptic number.

125123438 is a deficient number, since it is larger than the sum of its proper divisors (84281338).

125123438 is a wasteful number, since it uses less digits than its factorization.

125123438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7808 (or 7797 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 125123438 is about 11185.8588405182. The cubic root of 125123438 is about 500.1645298539.

Adding to 125123438 its reverse (834321521), we get a palindrome (959444959).

The spelling of 125123438 in words is "one hundred twenty-five million, one hundred twenty-three thousand, four hundred thirty-eight".