133125442 has 16 divisors (see below), whose sum is σ = 204888600. Its totient is φ = 64834560.

The previous prime is 133125437. The next prime is 133125451. The reversal of 133125442 is 244521331.

It can be written as a sum of positive squares in 4 ways, for example, as 107308881 + 25816561 = 10359^2 + 5081^2 .

It is a super-3 number, since 3×133125442³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81934 + ... + 83542.

Almost surely, 2^133125442 is an apocalyptic number.

133125442 is a deficient number, since it is larger than the sum of its proper divisors (71763158).

133125442 is a wasteful number, since it uses less digits than its factorization.

133125442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661.

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

The square root of 133125442 is about 11537.9999133299. Note that the first 4 decimals coincide. The cubic root of 133125442 is about 510.6073016642.

Adding to 133125442 its reverse (244521331), we get a palindrome (377646773).

The spelling of 133125442 in words is "one hundred thirty-three million, one hundred twenty-five thousand, four hundred forty-two".