135423753 has 4 divisors (see below), whose sum is σ = 180565008. Its totient is φ = 90282500.

The previous prime is 135423749. The next prime is 135423791. The reversal of 135423753 is 357324531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 357324531 = 3 ⋅119108177.

It is a cyclic number.

It is not a de Polignac number, because 135423753 - 2² = 135423749 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135423053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22570623 + ... + 22570628.

It is an arithmetic number, because the mean of its divisors is an integer number (45141252).

Almost surely, 2^135423753 is an apocalyptic number.

It is an amenable number.

135423753 is a deficient number, since it is larger than the sum of its proper divisors (45141255).

135423753 is an equidigital number, since it uses as much as digits as its factorization.

135423753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45141254.

The product of its digits is 37800, while the sum is 33.

The square root of 135423753 is about 11637.1711768797. The cubic root of 135423753 is about 513.5289696306.

The spelling of 135423753 in words is "one hundred thirty-five million, four hundred twenty-three thousand, seven hundred fifty-three".