134442423 has 48 divisors (see below), whose sum is σ = 217992320. Its totient is φ = 82511136.

The previous prime is 134442389. The next prime is 134442431. The reversal of 134442423 is 324244431.

It is a happy number.

134442423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 134442423 - 2⁸ = 134442167 is a prime.

It is a super-2 number, since 2×134442423² = 36149530204221858, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134442023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 170436 + ... + 171222.

Almost surely, 2^134442423 is an apocalyptic number.

134442423 is a deficient number, since it is larger than the sum of its proper divisors (83549897).

134442423 is an equidigital number, since it uses as much as digits as its factorization.

134442423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858 (or 846 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 134442423 is about 11594.9309182936. The cubic root of 134442423 is about 512.2855551765.

Adding to 134442423 its reverse (324244431), we get a palindrome (458686854).

The spelling of 134442423 in words is "one hundred thirty-four million, four hundred forty-two thousand, four hundred twenty-three".