133923105 has 16 divisors (see below), whose sum is σ = 238085760. Its totient is φ = 71425584.

The previous prime is 133923067. The next prime is 133923107. The reversal of 133923105 is 501329331.

It is a happy number.

It is not a de Polignac number, because 133923105 - 2¹¹ = 133921057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (133923107) 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, 495877 + ... + 496146.

It is an arithmetic number, because the mean of its divisors is an integer number (14880360).

Almost surely, 2^133923105 is an apocalyptic number.

133923105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133923105 is a deficient number, since it is larger than the sum of its proper divisors (104162655).

133923105 is an equidigital number, since it uses as much as digits as its factorization.

133923105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992037 (or 992031 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 27.

The square root of 133923105 is about 11572.5150680394. The cubic root of 133923105 is about 511.6250930276.

The spelling of 133923105 in words is "one hundred thirty-three million, nine hundred twenty-three thousand, one hundred five".