133597542 has 48 divisors (see below), whose sum is σ = 290926080. Its totient is φ = 40880736.

The previous prime is 133597537. The next prime is 133597567. The reversal of 133597542 is 245795331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 133597542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 363843 + ... + 364209.

It is an arithmetic number, because the mean of its divisors is an integer number (6060960).

Almost surely, 2^133597542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133597542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145463040).

133597542 is an abundant number, since it is smaller than the sum of its proper divisors (157328538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133597542 is a wasteful number, since it uses less digits than its factorization.

133597542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757 (or 744 counting only the distinct ones).

The product of its digits is 113400, while the sum is 39.

The square root of 133597542 is about 11558.4402927039. The cubic root of 133597542 is about 511.2101749415.

The spelling of 133597542 in words is "one hundred thirty-three million, five hundred ninety-seven thousand, five hundred forty-two".