133573242 has 16 divisors (see below), whose sum is σ = 291432672. Its totient is φ = 40476720.

The previous prime is 133573169. The next prime is 133573243. The reversal of 133573242 is 242375331.

It is not an unprimeable number, because it can be changed into a prime (133573243) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1011853 + ... + 1011984.

It is an arithmetic number, because the mean of its divisors is an integer number (18214542).

Almost surely, 2^133573242 is an apocalyptic number.

133573242 is an abundant number, since it is smaller than the sum of its proper divisors (157859430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133573242 is a wasteful number, since it uses less digits than its factorization.

133573242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023853.

The product of its digits is 15120, while the sum is 30.

The square root of 133573242 is about 11557.3890650094. The cubic root of 133573242 is about 511.1791784618.

It can be divided in two parts, 133 and 573242, that added together give a palindrome (573375).

The spelling of 133573242 in words is "one hundred thirty-three million, five hundred seventy-three thousand, two hundred forty-two".