133212042 has 24 divisors (see below), whose sum is σ = 289224000. Its totient is φ = 44312040.

The previous prime is 133212041. The next prime is 133212043. The reversal of 133212042 is 240212331.

133212042 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (133212041) and next prime (133212043).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (133212041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1567 + ... + 16397.

It is an arithmetic number, because the mean of its divisors is an integer number (12051000).

Almost surely, 2^133212042 is an apocalyptic number.

133212042 is an abundant number, since it is smaller than the sum of its proper divisors (156011958).

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

133212042 is a wasteful number, since it uses less digits than its factorization.

133212042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15338 (or 15335 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 133212042 is about 11541.7521200206. The cubic root of 133212042 is about 510.7179967772.

Adding to 133212042 its reverse (240212331), we get a palindrome (373424373).

The spelling of 133212042 in words is "one hundred thirty-three million, two hundred twelve thousand, forty-two".