125821371 has 8 divisors (see below), whose sum is σ = 180666640. Its totient is φ = 77428512.

The previous prime is 125821361. The next prime is 125821373. The reversal of 125821371 is 173128521.

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

It is not a de Polignac number, because 125821371 - 2¹⁵ = 125788603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125821373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1613056 + ... + 1613133.

It is an arithmetic number, because the mean of its divisors is an integer number (22583330).

Almost surely, 2^125821371 is an apocalyptic number.

125821371 is a deficient number, since it is larger than the sum of its proper divisors (54845269).

125821371 is a wasteful number, since it uses less digits than its factorization.

125821371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3226205.

The product of its digits is 3360, while the sum is 30.

The square root of 125821371 is about 11217.0125701989. The cubic root of 125821371 is about 501.0927712952.

Adding to 125821371 its reverse (173128521), we get a palindrome (298949892).

The spelling of 125821371 in words is "one hundred twenty-five million, eight hundred twenty-one thousand, three hundred seventy-one".