125421033 has 8 divisors (see below), whose sum is σ = 176029600. Its totient is φ = 79213248.

The previous prime is 125421031. The next prime is 125421059. The reversal of 125421033 is 330124521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125421033 - 2¹ = 125421031 is a prime.

It is a Duffinian number.

125421033 is a modest number, since divided by 21033 gives 1254 as remainder.

It is not an unprimeable number, because it can be changed into a prime (125421031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1100128 + ... + 1100241.

It is an arithmetic number, because the mean of its divisors is an integer number (22003700).

Almost surely, 2^125421033 is an apocalyptic number.

It is an amenable number.

125421033 is a deficient number, since it is larger than the sum of its proper divisors (50608567).

125421033 is a wasteful number, since it uses less digits than its factorization.

125421033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200391.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 125421033 is about 11199.1532269185. The cubic root of 125421033 is about 500.5607482211.

Adding to 125421033 its reverse (330124521), we get a palindrome (455545554).

The spelling of 125421033 in words is "one hundred twenty-five million, four hundred twenty-one thousand, thirty-three".