133454021 has 2 divisors, whose sum is σ = 133454022. Its totient is φ = 133454020.

The previous prime is 133454011. The next prime is 133454051. The reversal of 133454021 is 120454331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112063396 + 21390625 = 10586^2 + 4625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133454021 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133454011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66727010 + 66727011.

It is an arithmetic number, because the mean of its divisors is an integer number (66727011).

Almost surely, 2^133454021 is an apocalyptic number.

It is an amenable number.

133454021 is a deficient number, since it is larger than the sum of its proper divisors (1).

133454021 is an equidigital number, since it uses as much as digits as its factorization.

133454021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 133454021 is about 11552.2301310180. The cubic root of 133454021 is about 511.0270486076.

It can be divided in two parts, 1334 and 54021, that added together give a palindrome (55355).

The spelling of 133454021 in words is "one hundred thirty-three million, four hundred fifty-four thousand, twenty-one".