133498 has 4 divisors (see below), whose sum is σ = 200250.
Its totient is φ = 66748.
The previous prime is 133493. The next prime is 133499. The reversal of 133498 is 894331.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 894331 = 29 ⋅30839.
It can be written as a sum of positive squares in only one way, i.e., 106929 + 26569 = 327^2 + 163^2
It is not an unprimeable number, because it can be changed into a prime (133493) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33373 + ... + 33376.
2133498 is an apocalyptic number.
133498 is a deficient number, since it is larger than the sum of its proper divisors (66752).
133498 is an equidigital number, since it uses as much as digits as its factorization.
133498 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 66751.
The product of its digits is 2592, while the sum is 28.
The square root of 133498 is about 365.3737812159.
The cubic root of 133498 is about 51.1083177777.
The spelling of 133498 in words is "one hundred thirty-three thousand, four hundred ninety-eight".