125428 has 6 divisors (see below), whose sum is σ = 219506. Its totient is φ = 62712.

The previous prime is 125423. The next prime is 125429. The reversal of 125428 is 824521.

It can be written as a sum of positive squares in only one way, i.e., 116964 + 8464 = 342^2 + 92^2 .

It is a junction number, because it is equal to n+sod(n) for n = 125399 and 125408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15675 + ... + 15682.

2¹²⁵⁴²⁸ is an apocalyptic number.

It is an amenable number.

125428 is a deficient number, since it is larger than the sum of its proper divisors (94078).

125428 is a wasteful number, since it uses less digits than its factorization.

125428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31361 (or 31359 counting only the distinct ones).

The product of its digits is 640, while the sum is 22.

The square root of 125428 is about 354.1581567605. The cubic root of 125428 is about 50.0570016582.

Adding to 125428 its reverse (824521), we get a palindrome (949949).

The spelling of 125428 in words is "one hundred twenty-five thousand, four hundred twenty-eight".