133453420 has 12 divisors (see below), whose sum is σ = 280252224. Its totient is φ = 53381360.

The previous prime is 133453399. The next prime is 133453427. The reversal of 133453420 is 24354331.

It is not an unprimeable number, because it can be changed into a prime (133453427) 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, 3336316 + ... + 3336355.

It is an arithmetic number, because the mean of its divisors is an integer number (23354352).

Almost surely, 2^133453420 is an apocalyptic number.

133453420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133453420 is an abundant number, since it is smaller than the sum of its proper divisors (146798804).

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

133453420 is a wasteful number, since it uses less digits than its factorization.

133453420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6672680 (or 6672678 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 133453420 is about 11552.2041186953. The cubic root of 133453420 is about 511.0262814827.

The spelling of 133453420 in words is "one hundred thirty-three million, four hundred fifty-three thousand, four hundred twenty".