125433421 has 12 divisors (see below), whose sum is σ = 138147552. Its totient is φ = 113657544.

The previous prime is 125433419. The next prime is 125433431. The reversal of 125433421 is 124334521.

It is not a de Polignac number, because 125433421 - 2¹ = 125433419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125433431) 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, 750 + ... + 15856.

It is an arithmetic number, because the mean of its divisors is an integer number (11512296).

Almost surely, 2^125433421 is an apocalyptic number.

It is an amenable number.

125433421 is a deficient number, since it is larger than the sum of its proper divisors (12714131).

125433421 is a wasteful number, since it uses less digits than its factorization.

125433421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15168 (or 15149 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 125433421 is about 11199.7062907917. The cubic root of 125433421 is about 500.5772280258.

Adding to 125433421 its reverse (124334521), we get a palindrome (249767942).

The spelling of 125433421 in words is "one hundred twenty-five million, four hundred thirty-three thousand, four hundred twenty-one".