133043424 has 24 divisors (see below), whose sum is σ = 349239240. Its totient is φ = 44347776.

The previous prime is 133043423. The next prime is 133043459. The reversal of 133043424 is 424340331.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 133043394 and 133043403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133043423) 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, 692839 + ... + 693030.

It is an arithmetic number, because the mean of its divisors is an integer number (14551635).

Almost surely, 2^133043424 is an apocalyptic number.

It is an amenable number.

133043424 is an abundant number, since it is smaller than the sum of its proper divisors (216195816).

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

133043424 is a wasteful number, since it uses less digits than its factorization.

133043424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385882 (or 1385874 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 133043424 is about 11534.4451101906. The cubic root of 133043424 is about 510.5024191502.

Adding to 133043424 its reverse (424340331), we get a palindrome (557383755).

The spelling of 133043424 in words is "one hundred thirty-three million, forty-three thousand, four hundred twenty-four".