133054421 has 2 divisors, whose sum is σ = 133054422. Its totient is φ = 133054420.

The previous prime is 133054373. The next prime is 133054423. The reversal of 133054421 is 124450331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112678225 + 20376196 = 10615^2 + 4514^2 .

It is a cyclic number.

It is not a de Polignac number, because 133054421 - 2¹⁰ = 133053397 is a prime.

Together with 133054423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133054423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66527210 + 66527211.

It is an arithmetic number, because the mean of its divisors is an integer number (66527211).

Almost surely, 2^133054421 is an apocalyptic number.

It is an amenable number.

133054421 is a deficient number, since it is larger than the sum of its proper divisors (1).

133054421 is an equidigital number, since it uses as much as digits as its factorization.

133054421 is an evil number, because the sum of its binary digits is even.

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

The square root of 133054421 is about 11534.9218029426. The cubic root of 133054421 is about 510.5164843335.

The spelling of 133054421 in words is "one hundred thirty-three million, fifty-four thousand, four hundred twenty-one".