133440105 has 16 divisors (see below), whose sum is σ = 215579520. Its totient is φ = 70476288.

The previous prime is 133440101. The next prime is 133440121. The reversal of 133440105 is 501044331.

It is not a de Polignac number, because 133440105 - 2² = 133440101 is a prime.

It is a super-2 number, since 2×133440105² = 35612523244822050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133440101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41640 + ... + 44729.

It is an arithmetic number, because the mean of its divisors is an integer number (13473720).

Almost surely, 2^133440105 is an apocalyptic number.

133440105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133440105 is a deficient number, since it is larger than the sum of its proper divisors (82139415).

133440105 is a wasteful number, since it uses less digits than its factorization.

133440105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86480.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 133440105 is about 11551.6278073698. The cubic root of 133440105 is about 511.0092854371.

Adding to 133440105 its reverse (501044331), we get a palindrome (634484436).

The spelling of 133440105 in words is "one hundred thirty-three million, four hundred forty thousand, one hundred five".