133724037 has 4 divisors (see below), whose sum is σ = 178298720. Its totient is φ = 89149356.

The previous prime is 133724029. The next prime is 133724051. The reversal of 133724037 is 730427331.

133724037 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 133724037 - 2³ = 133724029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133723995 and 133724013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133724077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22287337 + ... + 22287342.

It is an arithmetic number, because the mean of its divisors is an integer number (44574680).

Almost surely, 2^133724037 is an apocalyptic number.

It is an amenable number.

133724037 is a deficient number, since it is larger than the sum of its proper divisors (44574683).

133724037 is an equidigital number, since it uses as much as digits as its factorization.

133724037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44574682.

The product of its (nonzero) digits is 10584, while the sum is 30.

The square root of 133724037 is about 11563.9109733688. The cubic root of 133724037 is about 511.3714681600.

The spelling of 133724037 in words is "one hundred thirty-three million, seven hundred twenty-four thousand, thirty-seven".