133124357 has 4 divisors (see below), whose sum is σ = 133380396. Its totient is φ = 132868320.

The previous prime is 133124347. The next prime is 133124389. The reversal of 133124357 is 753421331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67092481 + 66031876 = 8191^2 + 8126^2 .

It is a cyclic number.

It is not a de Polignac number, because 133124357 - 2¹² = 133120261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133124347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127238 + ... + 128279.

It is an arithmetic number, because the mean of its divisors is an integer number (33345099).

Almost surely, 2^133124357 is an apocalyptic number.

It is an amenable number.

133124357 is a deficient number, since it is larger than the sum of its proper divisors (256039).

133124357 is an equidigital number, since it uses as much as digits as its factorization.

133124357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256038.

The product of its digits is 7560, while the sum is 29.

The square root of 133124357 is about 11537.9528946863. The cubic root of 133124357 is about 510.6059144753.

Adding to 133124357 its reverse (753421331), we get a palindrome (886545688).

The spelling of 133124357 in words is "one hundred thirty-three million, one hundred twenty-four thousand, three hundred fifty-seven".