133075438 has 4 divisors (see below), whose sum is σ = 199613160. Its totient is φ = 66537718.

The previous prime is 133075427. The next prime is 133075441. The reversal of 133075438 is 834570331.

It is a semiprime because it is the product of two primes.

It is a super-4 number, since 4×133075438⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33268858 + ... + 33268861.

It is an arithmetic number, because the mean of its divisors is an integer number (49903290).

Almost surely, 2^133075438 is an apocalyptic number.

133075438 is a deficient number, since it is larger than the sum of its proper divisors (66537722).

133075438 is an equidigital number, since it uses as much as digits as its factorization.

133075438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66537721.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 133075438 is about 11535.8327831154. The cubic root of 133075438 is about 510.5433629595.

The spelling of 133075438 in words is "one hundred thirty-three million, seventy-five thousand, four hundred thirty-eight".