133342242 has 64 divisors (see below), whose sum is σ = 299358720. Its totient is φ = 39581520.

The previous prime is 133342213. The next prime is 133342273. The reversal of 133342242 is 242243331.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 471033 + ... + 471315.

It is an arithmetic number, because the mean of its divisors is an integer number (4677480).

Almost surely, 2^133342242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133342242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149679360).

133342242 is an abundant number, since it is smaller than the sum of its proper divisors (166016478).

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

133342242 is a wasteful number, since it uses less digits than its factorization.

133342242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 358 counting only the distinct ones).

The product of its digits is 3456, while the sum is 24.

The square root of 133342242 is about 11547.3911339315. The cubic root of 133342242 is about 510.8843326678.

Adding to 133342242 its reverse (242243331), we get a palindrome (375585573).

It can be divided in two parts, 13334 and 2242, that added together give a triangular number (15576 = T₁₇₆).

The spelling of 133342242 in words is "one hundred thirty-three million, three hundred forty-two thousand, two hundred forty-two".