133073242 has 4 divisors (see below), whose sum is σ = 199609866. Its totient is φ = 66536620.

The previous prime is 133073231. The next prime is 133073251. The reversal of 133073242 is 242370331.

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

It can be written as a sum of positive squares in only one way, i.e., 131354521 + 1718721 = 11461^2 + 1311^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33268309 + ... + 33268312.

Almost surely, 2^133073242 is an apocalyptic number.

133073242 is a deficient number, since it is larger than the sum of its proper divisors (66536624).

133073242 is an equidigital number, since it uses as much as digits as its factorization.

133073242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66536623.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 133073242 is about 11535.7376010379. The cubic root of 133073242 is about 510.5405546291.

The spelling of 133073242 in words is "one hundred thirty-three million, seventy-three thousand, two hundred forty-two".