133245343402 has 4 divisors (see below), whose sum is σ = 199868015106. Its totient is φ = 66622671700.

The previous prime is 133245343397. The next prime is 133245343457. The reversal of 133245343402 is 204343542331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204343542331 = 71 ⋅2878078061.

It can be written as a sum of positive squares in only one way, i.e., 128730981681 + 4514361721 = 358791^2 + 67189^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33311335849 + ... + 33311335852.

Almost surely, 2^133245343402 is an apocalyptic number.

133245343402 is a deficient number, since it is larger than the sum of its proper divisors (66622671704).

133245343402 is an equidigital number, since it uses as much as digits as its factorization.

133245343402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66622671703.

The product of its (nonzero) digits is 103680, while the sum is 34.

Adding to 133245343402 its reverse (204343542331), we get a palindrome (337588885733).

The spelling of 133245343402 in words is "one hundred thirty-three billion, two hundred forty-five million, three hundred forty-three thousand, four hundred two".