133971125 has 16 divisors (see below), whose sum is σ = 167519664. Its totient is φ = 106969600.

The previous prime is 133971091. The next prime is 133971127. The reversal of 133971125 is 521179331.

It can be written as a sum of positive squares in 8 ways, for example, as 25623844 + 108347281 = 5062^2 + 10409^2 .

It is not a de Polignac number, because 133971125 - 2⁸ = 133970869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133971091 and 133971100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133971127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121577 + ... + 122673.

It is an arithmetic number, because the mean of its divisors is an integer number (10469979).

Almost surely, 2^133971125 is an apocalyptic number.

It is an amenable number.

133971125 is a deficient number, since it is larger than the sum of its proper divisors (33548539).

133971125 is an equidigital number, since it uses as much as digits as its factorization.

133971125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089 (or 2079 counting only the distinct ones).

The product of its digits is 5670, while the sum is 32.

The square root of 133971125 is about 11574.5896255548. The cubic root of 133971125 is about 511.6862358282.

The spelling of 133971125 in words is "one hundred thirty-three million, nine hundred seventy-one thousand, one hundred twenty-five".