133143250 has 32 divisors (see below), whose sum is σ = 251759664. Its totient is φ = 52720000.

The previous prime is 133143239. The next prime is 133143253. The reversal of 133143250 is 52341331.

It can be written as a sum of positive squares in 8 ways, for example, as 27279729 + 105863521 = 5223^2 + 10289^2 .

It is not an unprimeable number, because it can be changed into a prime (133143253) 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, 22614 + ... + 27886.

Almost surely, 2^133143250 is an apocalyptic number.

133143250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133143250 is a deficient number, since it is larger than the sum of its proper divisors (118616414).

133143250 is a wasteful number, since it uses less digits than its factorization.

133143250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5391 (or 5381 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 133143250 is about 11538.7715983982. The cubic root of 133143250 is about 510.6300683853.

Adding to 133143250 its reverse (52341331), we get a palindrome (185484581).

The spelling of 133143250 in words is "one hundred thirty-three million, one hundred forty-three thousand, two hundred fifty".