134021023 has 4 divisors (see below), whose sum is σ = 139848048. Its totient is φ = 128194000.

The previous prime is 134020973. The next prime is 134021033. The reversal of 134021023 is 320120431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320120431 = 47 ⋅6811073.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134021023 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 134020988 and 134021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134021033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2913478 + ... + 2913523.

It is an arithmetic number, because the mean of its divisors is an integer number (34962012).

Almost surely, 2^134021023 is an apocalyptic number.

134021023 is a deficient number, since it is larger than the sum of its proper divisors (5827025).

134021023 is an equidigital number, since it uses as much as digits as its factorization.

134021023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5827024.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 134021023 is about 11576.7449224728. The cubic root of 134021023 is about 511.7497543677.

Adding to 134021023 its reverse (320120431), we get a palindrome (454141454).

The spelling of 134021023 in words is "one hundred thirty-four million, twenty-one thousand, twenty-three".