133743541 has 2 divisors, whose sum is σ = 133743542. Its totient is φ = 133743540.

The previous prime is 133743509. The next prime is 133743553. The reversal of 133743541 is 145347331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127035441 + 6708100 = 11271^2 + 2590^2 .

It is a cyclic number.

It is not a de Polignac number, because 133743541 - 2⁵ = 133743509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133743941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66871770 + 66871771.

It is an arithmetic number, because the mean of its divisors is an integer number (66871771).

Almost surely, 2^133743541 is an apocalyptic number.

It is an amenable number.

133743541 is a deficient number, since it is larger than the sum of its proper divisors (1).

133743541 is an equidigital number, since it uses as much as digits as its factorization.

133743541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 31.

The square root of 133743541 is about 11564.7542559278. The cubic root of 133743541 is about 511.3963285727.

The spelling of 133743541 in words is "one hundred thirty-three million, seven hundred forty-three thousand, five hundred forty-one".