133242252 has 48 divisors (see below), whose sum is σ = 365256192. Its totient is φ = 37270080.

The previous prime is 133242233. The next prime is 133242257. The reversal of 133242252 is 252242331.

It is not an unprimeable number, because it can be changed into a prime (133242257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37108 + ... + 40539.

It is an arithmetic number, because the mean of its divisors is an integer number (7609504).

Almost surely, 2^133242252 is an apocalyptic number.

133242252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133242252 is an abundant number, since it is smaller than the sum of its proper divisors (232013940).

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

133242252 is a wasteful number, since it uses less digits than its factorization.

133242252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77678 (or 77676 counting only the distinct ones).

The product of its digits is 2880, while the sum is 24.

The square root of 133242252 is about 11543.0607726027. The cubic root of 133242252 is about 510.7566009561.

Adding to 133242252 its reverse (252242331), we get a palindrome (385484583).

It can be divided in two parts, 13324 and 2252, that added together give a triangular number (15576 = T₁₇₆).

The spelling of 133242252 in words is "one hundred thirty-three million, two hundred forty-two thousand, two hundred fifty-two".