133342399 has 4 divisors (see below), whose sum is σ = 140360440. Its totient is φ = 126324360.

The previous prime is 133342393. The next prime is 133342403. The reversal of 133342399 is 993243331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993243331 = 8761 ⋅113371.

It is a cyclic number.

It is not a de Polignac number, because 133342399 - 2⁵ = 133342367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133342393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3508992 + ... + 3509029.

It is an arithmetic number, because the mean of its divisors is an integer number (35090110).

Almost surely, 2^133342399 is an apocalyptic number.

133342399 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

133342399 is a deficient number, since it is larger than the sum of its proper divisors (7018041).

133342399 is an equidigital number, since it uses as much as digits as its factorization.

133342399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7018040.

The product of its digits is 52488, while the sum is 37.

The square root of 133342399 is about 11547.3979320018. The cubic root of 133342399 is about 510.8845331764.

The spelling of 133342399 in words is "one hundred thirty-three million, three hundred forty-two thousand, three hundred ninety-nine".