133142215 has 24 divisors (see below), whose sum is σ = 178582320. Its totient is φ = 94950144.

The previous prime is 133142213. The next prime is 133142221. The reversal of 133142215 is 512241331.

It is a happy number.

It is not a de Polignac number, because 133142215 - 2¹ = 133142213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133142213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28516 + ... + 32854.

It is an arithmetic number, because the mean of its divisors is an integer number (7440930).

Almost surely, 2^133142215 is an apocalyptic number.

133142215 is a deficient number, since it is larger than the sum of its proper divisors (45440105).

133142215 is a wasteful number, since it uses less digits than its factorization.

133142215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4399 (or 4380 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 133142215 is about 11538.7267495162. The cubic root of 133142215 is about 510.6287452402.

Adding to 133142215 its reverse (512241331), we get a palindrome (645383546).

It can be divided in two parts, 1331 and 42215, that multiplied together give a palindrome (56188165).

The spelling of 133142215 in words is "one hundred thirty-three million, one hundred forty-two thousand, two hundred fifteen".