133742537 has 2 divisors, whose sum is σ = 133742538. Its totient is φ = 133742536.

The previous prime is 133742509. The next prime is 133742569. The reversal of 133742537 is 735247331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100380361 + 33362176 = 10019^2 + 5776^2 .

It is a cyclic number.

It is not a de Polignac number, because 133742537 - 2¹⁸ = 133480393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133742497 and 133742506.

It is not a weakly prime, because it can be changed into another prime (133742597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66871268 + 66871269.

It is an arithmetic number, because the mean of its divisors is an integer number (66871269).

Almost surely, 2^133742537 is an apocalyptic number.

It is an amenable number.

133742537 is a deficient number, since it is larger than the sum of its proper divisors (1).

133742537 is an equidigital number, since it uses as much as digits as its factorization.

133742537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 35.

The square root of 133742537 is about 11564.7108480930. The cubic root of 133742537 is about 511.3950489017.

Adding to 133742537 its reverse (735247331), we get a palindrome (868989868).

The spelling of 133742537 in words is "one hundred thirty-three million, seven hundred forty-two thousand, five hundred thirty-seven".