133724997 has 12 divisors (see below), whose sum is σ = 220752480. Its totient is φ = 76414248.

The previous prime is 133724971. The next prime is 133724999. The reversal of 133724997 is 799427331.

It is not a de Polignac number, because 133724997 - 2⁶ = 133724933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133724999) 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 11 ways as a sum of consecutive naturals, for example, 1061247 + ... + 1061372.

It is an arithmetic number, because the mean of its divisors is an integer number (18396040).

Almost surely, 2^133724997 is an apocalyptic number.

It is an amenable number.

133724997 is a deficient number, since it is larger than the sum of its proper divisors (87027483).

133724997 is a wasteful number, since it uses less digits than its factorization.

133724997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2122632 (or 2122629 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 133724997 is about 11563.9524817426. The cubic root of 133724997 is about 511.3726918628.

The spelling of 133724997 in words is "one hundred thirty-three million, seven hundred twenty-four thousand, nine hundred ninety-seven".