133742801 has 2 divisors, whose sum is σ = 133742802. Its totient is φ = 133742800.

The previous prime is 133742783. The next prime is 133742803. The reversal of 133742801 is 108247331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108139201 + 25603600 = 10399^2 + 5060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133742801 is a prime.

Together with 133742803, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133742803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66871400 + 66871401.

It is an arithmetic number, because the mean of its divisors is an integer number (66871401).

Almost surely, 2^133742801 is an apocalyptic number.

It is an amenable number.

133742801 is a deficient number, since it is larger than the sum of its proper divisors (1).

133742801 is an equidigital number, since it uses as much as digits as its factorization.

133742801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 133742801 is about 11564.7222621211. The cubic root of 133742801 is about 511.3953853895.

The spelling of 133742801 in words is "one hundred thirty-three million, seven hundred forty-two thousand, eight hundred one".