133140423 has 8 divisors (see below), whose sum is σ = 191176048. Its totient is φ = 81932544.

The previous prime is 133140401. The next prime is 133140439. The reversal of 133140423 is 324041331.

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

It is not a de Polignac number, because 133140423 - 2¹⁰ = 133139399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133140423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133140473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1706890 + ... + 1706967.

It is an arithmetic number, because the mean of its divisors is an integer number (23897006).

Almost surely, 2^133140423 is an apocalyptic number.

133140423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

133140423 is a deficient number, since it is larger than the sum of its proper divisors (58035625).

133140423 is a wasteful number, since it uses less digits than its factorization.

133140423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3413873.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 133140423 is about 11538.6490977064. The cubic root of 133140423 is about 510.6264543294.

Adding to 133140423 its reverse (324041331), we get a palindrome (457181754).

The spelling of 133140423 in words is "one hundred thirty-three million, one hundred forty thousand, four hundred twenty-three".