133740245 has 8 divisors (see below), whose sum is σ = 161417016. Its totient is φ = 106373056.

The previous prime is 133740223. The next prime is 133740251. The reversal of 133740245 is 542047331.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12013156 + 121727089 = 3466^2 + 11033^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133740245 - 2⁸ = 133739989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76442 + ... + 78171.

It is an arithmetic number, because the mean of its divisors is an integer number (20177127).

Almost surely, 2^133740245 is an apocalyptic number.

It is an amenable number.

133740245 is a deficient number, since it is larger than the sum of its proper divisors (27676771).

133740245 is a wasteful number, since it uses less digits than its factorization.

133740245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154791.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 133740245 is about 11564.6117531027. The cubic root of 133740245 is about 511.3921275570.

Adding to 133740245 its reverse (542047331), we get a palindrome (675787576).

The spelling of 133740245 in words is "one hundred thirty-three million, seven hundred forty thousand, two hundred forty-five".