125421447 has 8 divisors (see below), whose sum is σ = 167347440. Its totient is φ = 83554880.

The previous prime is 125421421. The next prime is 125421449. The reversal of 125421447 is 744124521.

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

It is a cyclic number.

It is not a de Polignac number, because 125421447 - 2¹⁰ = 125420423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125421449) 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, 9672 + ... + 18557.

It is an arithmetic number, because the mean of its divisors is an integer number (20918430).

Almost surely, 2^125421447 is an apocalyptic number.

125421447 is a deficient number, since it is larger than the sum of its proper divisors (41925993).

125421447 is a wasteful number, since it uses less digits than its factorization.

125421447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29713.

The product of its digits is 8960, while the sum is 30.

The square root of 125421447 is about 11199.1717104436. The cubic root of 125421447 is about 500.5612989844.

Adding to 125421447 its reverse (744124521), we get a palindrome (869545968).

The spelling of 125421447 in words is "one hundred twenty-five million, four hundred twenty-one thousand, four hundred forty-seven".